Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ba14b021eec9d20…

MALICIOUS

PDF

83.7 KB Created: 2021-06-25 18:01:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 591b37307eabfd5f88ccf21143588883 SHA-1: 9d3d0d0531a681986558b1ad8fc908951c5b5299 SHA-256: 2ba14b021eec9d205bdd25ec04dcec18209c51b90e3a0d2a793f2e98632a68aa
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded URLs, many of which point to compromised CMS upload directories or are hosted on disposable domains, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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 http://pogservice.ru/userfiles/file/sexarunavafisisa.pdf In PDF document text
    • https://medicentrumnz.eu/medicentrum/files/file/pudosetevero.pdfIn PDF document text
    • https://inverpalmas.com/aym_image/files/31741887194.pdfIn PDF document text
    • https://ctsgroups.asia/images/file/16976117599.pdfIn PDF document text
    • http://boilerservis.ru/uploads/files/midikowamimokadebilamib.pdfIn PDF document text
    • http://zimaletto.com/uploads/file/xunoxolukadotorosor.pdfIn PDF document text
    • http://sarlampa.ru/upload_picture/duxiwawisitekove.pdfIn PDF document text
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075a4860f1b3---majobamixegozuwusudepakez.pdfIn PDF document text
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094cbad267d8---6633223292.pdfIn PDF document text
    • http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/4d5b4a881a3fc8826d327da75cae564f/jupiludipijudepile.pdfIn PDF document text
    • http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160a74bba7614e---wugav.pdfIn PDF document text
    • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/574941be48aed4a5fc435c14e0f07e9a/91291706168.pdfIn PDF document text
    • https://actorconseil.com/files/file/ragefejasosopenexonuwene.pdfIn PDF document text
    • https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/6945ef9b33fb10a367d63b0ccc2cb377/joxez.pdfIn PDF document text
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16087ff204f68a---26745175350.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/b6qtnesjeujjk9spvhc0p4k6b2/supalibikorejidu.pdfIn PDF document text
    • https://sasalidayanisma.org/uploads/file/femikamolamamezurifof.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160b559efe93b5---74801908685.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/s0nsc9cibhidlckn25ustvi7p0/93326369169.pdfIn PDF document text
    • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/njbjcs78ofnegg1bsmuu00l013/riwalemijis.pdfIn PDF document text
    • https://autosaloncenter.com/uploads/file/89837582221.pdfIn PDF document text
    • https://plswa.com/wp-content/plugins/super-forms/uploads/php/files/c91c5e9ccf6705254249c68882250015/titoxabe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=beef+ribs+on+the+grillPDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e673.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE673 10524 bytes
SHA-256: 86482d4ec733553aec50f72ef87c33852fd25e47da131001706c45f997c22809
font_01_sfnt_off0000fe4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE4F 16724 bytes
SHA-256: 661d776fb3ec323d8c1ec3e2d77b431c4cedd216eaa11fb3de0a62da1144a8bf
font_02_sfnt_off000129b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129B9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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