Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ac74b2468e91261…

MALICIOUS

PDF

96.5 KB Created: 2021-02-23 21:53:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 2d6133f821f5b0b3f2e1a9e22713e524 SHA-1: a9fd05f31722ad3d42223042e06b196bf59af8e9 SHA-256: 2ac74b2468e91261011a04271833187952495900c4cabd125a3d4148d9f1efb9
176 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a callback-phone (TOAD) lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://crophysi.ru/strik?utm_term=sodastream+source+sparkling+water+maker+kit PDF link annotation
    • https://sisemukogonutop.weebly.com/uploads/1/3/4/2/134266332/galududeka.pdfIn PDF document text
    • https://cdn.sqhk.co/rolidazi/SnVYGjb/galaxy_patrol_space_shooter_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/zezinojox/ei2Qjel/2765490835.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvazuginu/idE8i2M/painter_mobile_apk_cracked.pdfIn PDF document text
    • https://cdn.sqhk.co/xuluriwu/ihajboW/miro_aew_twitter.pdfIn PDF document text
    • https://cdn.sqhk.co/kifukuvitog/cmTYjfx/tower_heroes_codes_mejoress.pdfIn PDF document text
    • https://dupudebokuvufex.weebly.com/uploads/1/3/2/3/132303235/81aa3f8.pdfIn PDF document text
    • https://cdn.sqhk.co/fofateze/gdzCibK/dead_effect_3_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/wifukatar/fHibh6K/vrse_batman_game_download_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/nepolefesesiku.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/lost_boy_piano_sheet_music_roblox.pdfIn PDF document text
    • http://fepadegan.epizy.com/61095796133.pdfIn PDF document text
    • http://leduvusiluvev.rf.gd/88055674488.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/64239025774.pdfIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013aaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13AAF 5652 bytes
SHA-256: 9319dd165f97a76c63733a9f08c34eb73578f9885627176f59a8c4470909de69
font_01_sfnt_off00014df0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14DF0 11356 bytes
SHA-256: 114430b52737e93fa9772d25e5fb8386f19d79b7b447033a777ff259148e072e

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