Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ad7fd7d355a61d0…

MALICIOUS

PDF

76.4 KB Created: 2021-06-11 06:04:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: be1d9cb409a1aeef6f4ac6623fe29b67 SHA-1: 55dceca90f3c3f3a516726f46ba83a54242e90eb SHA-256: 1ad7fd7d355a61d0588fd47e540877441cfc73ec012a5ff8815e39f6e7ccf31b
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document functions as a link farm, directing users to download a movie via multiple compromised websites. The presence of numerous external URIs and link farm heuristics, combined with a critical ClamAV detection, strongly indicates a malicious phishing or malware distribution attempt. No scripts were extracted, but the document's structure and embedded URLs suggest it is designed to exploit user interest in media content for malicious purposes.

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://oniceh.ru/uplcv?utm_term=baaghi+3+download+full+movie PDF link annotation
    • https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/363c33037d2faf2584f5a9ac07853f36/19763868603.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/g21jjie864ocv49odnv974rfr1/zuwulijufopefomin.pdfIn PDF document text
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/bca71509f4d20a540850633ad3ad41ff/ditetajezamemedemu.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/5734ej9m2kubf56snag5vp00g1/tavejuzisaluboje.pdfIn PDF document text
    • https://ensasoft.com.tr/wp-content/plugins/super-forms/uploads/php/files/3a5c29uhb2vo7hvbst2r9o7j3c/40912846204.pdfIn PDF document text
    • http://rollfactorytogo.com/uploads/files/levalazawaxovomagar.pdfIn PDF document text
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/2c1cf66d01a8294e6a0365a02d40733d/milijivibazuzoladapot.pdfIn PDF document text
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/3mjem3njg53of6fupssr1qmj5n/makujosifelex.pdfIn PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/f832a50e966eb42a2cae981188811c09/wanel.pdfIn PDF document text
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/ula7rmbp5vcd42u507jii2r0c1/16538932917.pdfIn PDF document text
    • https://www.erenang.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b84a9025f3---87212712465.pdfIn PDF document text
    • https://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/d498f91c9a205fec9ade469ebe87cbfe/24449063942.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/drmevleooegd59r79ppkfk7and/feribolega.pdfIn PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/653c69a61df5dcb65848b56b4f32691f/jemaf.pdfIn PDF document text
    • http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160761c39ad1c3---lofexosoragadujuxi.pdfIn PDF document text
    • https://vildmarksjagt.dk/userfiles/file/63245682284.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED98 5412 bytes
SHA-256: 739b470cda2943a3bf5754afeb70a15e9b8fa06a8a4f3ab32902aa78ad5a3220
font_01_sfnt_off00010000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10000 10860 bytes
SHA-256: f74a4afc77ac220484b0a5774abd986469e41f57251f1e26fa8710ad4439c5e0

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