Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0880094478a79b7…

MALICIOUS

PDF

68.1 KB Created: 2020-12-09 21:04:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: ed362b989239891e8a72c436d0bfb45c SHA-1: eaa18595f864938dbec30246b1fa0bcb63649eb5 SHA-256: a0880094478a79b7243264c5634ce52026b717f3f4c1680e2ef05065e2d13552
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic identifying it as a link farm. One of these links, 'https://traffnew.ru/strik?utm_term=cool+graffiti+drawings', is flagged as suspicious. ClamAV detection and ML classification strongly indicate malicious intent, specifically classifying it as 'Pdf.Phishing.Trojan'. The document body, though partially corrupted, suggests a lure related to 'graffiti drawings'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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/strik?utm_term=cool+graffiti+drawings PDF link annotation
    • https://tovalowu.weebly.com/uploads/1/3/4/3/134375552/fusofubaxej-koral.pdfIn PDF document text
    • https://bativizamazon.weebly.com/uploads/1/3/4/7/134770744/jepexezemijas.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/difelubujaxaxovisago.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368222/normal_5fb346fa525db.pdfIn PDF document text
    • https://wipomozexabezi.weebly.com/uploads/1/3/0/7/130776841/89c232b487.pdfIn PDF document text
    • https://sumigixutaruxaj.weebly.com/uploads/1/3/4/7/134748626/4659053.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc50aa38139af03765fbccb/t/5fc6e12f788a962b7c1e9c70/1606869297389/22400873984.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fced1f15b099b259a748df4/t/5fd0858da91a8d24337cdf34/1607501208012/party_city_locations_baltimore_md.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5bdc540f1034a5cca01ae/t/5fcd95ab05ddc9599d3bf4a3/1607308716035/download_game_crazy_racing_car_2_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/crafty_morning_snow_globe_template.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc527cf084698658e79f80f/t/5fcf74091a78ee5f01683e24/1607431178296/41320260485.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02a192cc-7b10-40db-944a-5e923e0275e4/matlab_sinyal_ileme_rnekleri.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE2C 5072 bytes
SHA-256: 030ef188d7aff79d1edf163f89fc16783b226a08ed5528ef31e6a2e5ef40446d
font_01_sfnt_off0000df8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF8F 10960 bytes
SHA-256: f11e4cf08dd03f9c53c9cee309890fac234542cc5581d4878eed3968c8e337f8

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