Malicious PDF — malware analysis report

Static analysis result for SHA-256 0da6d9a3b9df2838…

MALICIOUS

PDF

94.7 KB Created: 2021-06-28 09:10:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: d8f150496cb8e2ac4fbb2be8c2594eac SHA-1: 7df966bf08b0bb7a774c268070a8494c1040893e SHA-256: 0da6d9a3b9df2838baeb114fb13f8854c081b89a06f42956861c62150d8548e4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous embedded URLs that point to compromised CMS uploads and disposable hosting, likely to distribute further malware or phish for credentials. The presence of external URIs and link farms suggests an attempt to lure users to malicious sites, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/q7tsmsm928uu37hktqnbnauup9/donotoroluri.pdf In PDF document text
    • https://emprenderem.cl/files/baxifunopitowo.pdfIn PDF document text
    • http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160975b9998b76---zugex.pdfIn PDF document text
    • https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/160918ec9eb05d---22275068692.pdfIn PDF document text
    • https://pousadamarazul.tur.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608c9b3628f39---leseralelujikuk.pdfIn PDF document text
    • https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/b53900d5addf89ca20b1aea338204494/24533454452.pdfIn PDF document text
    • https://beysukonaklari.com/ckfinder/userfiles/files/zamakozaximu.pdfIn PDF document text
    • https://cr2tek.com/userfiles/Proj_Name//files/76299492533.pdfIn PDF document text
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/da8937254bbd5677d6911f1392fb771d/weduresowibexekavafumisag.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/rj7mg7sfb5bt2kgg7k5a2vfva1/45712465756.pdfIn PDF document text
    • http://jerseybankruptcylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/nisasaxasoragovavofub.pdfIn PDF document text
    • https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/1c96a0db19314d613c1de8dd81408b9a/bubiwebirovozipenejotire.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082792bba9cb---xujedovesuduwovesumakogib.pdfIn PDF document text
    • http://bfr-bialapodlaska.pl/userfiles/file/domufudivoti.pdfIn PDF document text
    • http://proxima-design.cz/files/file/39832118016.pdfIn PDF document text
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/015a55b5f38405979db190e0cb272754/83264027628.pdfIn PDF document text
    • http://aklond.com/UploadFilesfile///2021050411113286.pdfIn PDF document text
    • http://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072632638347---2909939294.pdfIn PDF document text
    • https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160763020ee509---gudotabosugibosuravon.pdfIn PDF document text
    • https://theatresaucinema.fr/uploads/file/63871511350.pdfIn PDF document text
    • https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160705e6f7343d---20941276493.pdfIn PDF document text
    • http://fiumevivo.it/userfiles/files/kolufakor.pdfIn PDF document text
    • https://nhathuydesign.com/wp-content/plugins/super-forms/uploads/php/files/jqtsjjbtihm7pbgu5ism3clkjp/99755631754.pdfIn PDF document text
    • http://shlawllc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/komovazarotudipa.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160beff595564e---kiruvigedinow.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=omg+dazzle+little+sisterPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3E 17088 bytes
SHA-256: 07450e7f9d12a4564761e9c83b710f44eaccf505e4d0a26dcfcff47eb4149fa4
font_01_sfnt_off00010411.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10411 18292 bytes
SHA-256: 11faadb286129f60603164f75a953bb60ae08553af8c878061e655892b9ba727
font_02_sfnt_off00013479.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13479 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00014c86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C86 1788 bytes
SHA-256: 48184406015d3a551f7abcf10d716e4c634d2a9eae695e86583d648bb8d95d1f
font_04_sfnt_off000154e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x154E9 10452 bytes
SHA-256: 3c5b70d6c2513f1f54a972dfea162685fa24d8ca0b564dedcd0f60cf7f57c0e8

Open this report in the interactive analyzer, or submit your own file for analysis.