Malicious PDF — malware analysis report

Static analysis result for SHA-256 2598fe30439113a1…

MALICIOUS

PDF

87.7 KB Created: 2021-07-04 08:05:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: d8c3b2b7ceb26c99d4688f285558933e SHA-1: f5b4d73bcffd36ece9a461ecf67cd9632ba51c88 SHA-256: 2598fe30439113a1edf802bc5c781b2e29636936948b6e13447d319af1a4dce9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ML classifiers and ClamAV, flagging it as a phishing trojan. It functions as a link farm, containing numerous URLs that point to compromised CMS uploads, likely serving as a distribution point for further malicious content. The presence of external URIs and link farm characteristics strongly suggests a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://hinodanang.com/uploads/image/files/79645339259.pdf In PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/m2mdchlnq1if3pkg4aiqdu8tj3/sutizejizof.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/47e33abea1168905edca737850e306a1/dumix.pdfIn PDF document text
    • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/ccbd7088ec26256ae015e47fba983000/botuvefed.pdfIn PDF document text
    • http://espacioschillout.es/images/admin/file/tokalesiwiwoxogosew.pdfIn PDF document text
    • http://allasclub.com/campannas/file/sulekoveboxiliw.pdfIn PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/b09371291788e2b8b1a8d5a4d064cf0a/xovasapurasumeganubutik.pdfIn PDF document text
    • https://thehamptonsbloomington.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080b3619820d---19020734700.pdfIn PDF document text
    • http://agataklimowska.pl/userfiles/file/warotakekuzikogozeza.pdfIn PDF document text
    • https://trsbarriersdirect.com/wp-content/plugins/super-forms/uploads/php/files/a4inued3hfhdsod1dkecvafqp4/gabokikediraxubakubira.pdfIn PDF document text
    • http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/160852bb561834---pafimomegunarinidosiruwo.pdfIn PDF document text
    • http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba88887a0fa---48772804332.pdfIn PDF document text
    • http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609edd27e7644---zuranovuxigaxovetisit.pdfIn PDF document text
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab0a5cd2ff0---9082568987.pdfIn PDF document text
    • http://personnelstrategies.net/userfiles/file/zamujakedubibizagosedo.pdfIn PDF document text
    • http://prvugkh.ru/uploads/files/63892537686.pdfIn PDF document text
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608af3511ced1---88627830474.pdfIn PDF document text
    • http://maekuangudomthara.com/ckfinder/userfiles/files/xorofetevorot.pdfIn PDF document text
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071f31e0304a---zabodaguliwoligime.pdfIn PDF document text
    • https://tecnibat.net/uploads/archivos/gaxidigawefinalebe.pdfIn PDF document text
    • http://nhuaduongnhapkhauaz.org/upload/files/29389692548.pdfIn PDF document text
    • https://realestateconnect.us/wp-content/plugins/super-forms/uploads/php/files/bpmcegpg9t0bo2s6fsbvg5ovk4/kiwewarodavawofugutapojug.pdfIn PDF document text
    • https://247christianity.org/fckeditor/userfiles/file/86764910471624513413.pdfIn PDF document text
    • https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/e5a5d4e8d7bd5e2d485f1d8a5d288842/52107150056.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=for+what+endoscopy+is+donePDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6AD 16248 bytes
SHA-256: 55511ca5e4a29b883652174bfa700da084f620421f21042d05f74c02b400e864
font_01_sfnt_off000120af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120AF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000138c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138C6 10740 bytes
SHA-256: d4733001d4359e086b1c238c937e0f58d5a9f69185665a222f12d5d614a73e04

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