Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ac0b92a77517289…

MALICIOUS

PDF

80.7 KB Created: 2021-06-10 12:54:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 097aacaeed246b38827f10d0bc92c676 SHA-1: 139decc10526d1d3661fdef94917e00d63f38b9b SHA-256: 2ac0b92a77517289038d00c76d0db132e8406a57175b8db598d65b20a79883b6
196 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a phishing lure, directing users to compromised websites and potentially facilitating the download of malicious archives. The presence of multiple links to compromised WordPress installations and disposable hosting, combined with the 'Password-protected archive handoff' heuristic, strongly suggests an attempt to trick users into downloading further malicious content. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://queure.ru/uplcv?utm_term=taiko+no+tatsujin+arcade+pc PDF link annotation
    • http://airconbank.com/upload/fckeditor/file/18450318283.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/160837eb586f89---68591609561.pdfIn PDF document text
    • http://middlegeorgiacoinclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e882a16750---47012875987.pdfIn PDF document text
    • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/ruq9qfj8rn7ps6eajeu10f8u5r/momurobaxopevedexasitura.pdfIn PDF document text
    • https://mobistore.co.nz/wp-content/plugins/super-forms/uploads/php/files/b6a4e38679cecf1f41b69633d1c7a5ec/4157499479.pdfIn PDF document text
    • https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/6f70619f61ac64bd321313c307ad4772/bonibo.pdfIn PDF document text
    • http://xn--dlek-5qa.com/admin/UserFiles/file/84687999502.pdfIn PDF document text
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16098bf02dc088---fopemaxejasabimonitol.pdfIn PDF document text
    • http://mfcwestenkwartier.nl/beta/userfiles/file/50913432148.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afcbf0cab51---71755517393.pdfIn PDF document text
    • http://asbufestival.com/uploads/FCK_files/file/80727792746.pdfIn PDF document text
    • https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/s89g784osg2p8f40v6qsohsqoa/27667410303.pdfIn PDF document text
    • http://zhengfutz.com/v15/Upload/file/2021517935183454.pdfIn PDF document text
    • http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/o4bv8c2hp15et6j52dmqn8cir0/tozagiselofox.pdfIn PDF document text
    • https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/8b90b119c9b8d3c8749dbc425df3c3c1/dovunasizagulolakofet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • 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://scripts.sil.org/OFLIn 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_off0000e42e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE42E 5712 bytes
SHA-256: 9da09c6b319306d216f24febeaa81af2a0d92c62f4fd509b7f5f0f270ee18fa5
font_01_sfnt_off0000f818.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF818 5124 bytes
SHA-256: 28eab57627edd3cddd7734449c33c35a54a891be7de509b5caa19788afebd926
font_02_sfnt_off0001099e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1099E 13288 bytes
SHA-256: 53cb1f1df304235d590f9fab39cc268fe823ae2255e989ee3ab033aea8e08a4d

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