Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fab89f66eda576c…

MALICIOUS

PDF

63.8 KB Created: 2020-11-23 01:49:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 51350879cc5c3c1bf43e338ecb4598fb SHA-1: 9061cd04009156d386cd14f81d1b2ec8da90cb82 SHA-256: 6fab89f66eda576cd77a0757d662f7a75855414a9d5209b5d6c6875ecc31031e
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 0.9998

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://traffnew.ru/123?utm_term=understanding+psychology+mcgraw+hill+teacher+edition+pdf PDF link annotation
    • https://furutivox.weebly.com/uploads/1/3/4/3/134360368/bomimagedezureko.pdfIn PDF document text
    • https://xepuduwosijun.weebly.com/uploads/1/3/4/6/134634987/774bccd0.pdfIn PDF document text
    • https://zalopajozi.weebly.com/uploads/1/3/1/4/131453352/6532961.pdfIn PDF document text
    • https://sibinepenisux.weebly.com/uploads/1/3/4/4/134467302/nawoj_giboniwowe.pdfIn PDF document text
    • https://rivatuvimib.weebly.com/uploads/1/3/4/4/134469475/tutujuko.pdfIn PDF document text
    • https://gebekogekikak.weebly.com/uploads/1/3/4/6/134694855/beriwum_somefobego.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/gajejasa/skam_english_subtitles_season_4.pdfIn PDF document text
    • https://s3.amazonaws.com/wovigebi/hellblazer_origins_vol_1.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/feravegademejinotew.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/cover_letter_sheet_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/lufthansa_group_annual_report_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/athena_7_minute_lift_reviews.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_off0000bb41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB41 5752 bytes
SHA-256: 5dd00f6f774aae198df3cc9aff89170190f031e79d56b381b2e5525d3366795e
font_01_sfnt_off0000cec8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEC8 10304 bytes
SHA-256: ce7897920813ba2411c92520e10f3c8152b55a77e3fc72eb413732d3397ade61

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