Malicious PDF — malware analysis report

Static analysis result for SHA-256 90d6446b6c35017d…

MALICIOUS

PDF

71.9 KB Created: 2020-12-06 11:39:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: b59a3834d9c9966ecfef936557b6b871 SHA-1: 136263e67b9f6ddb34bc8b646c7122e9fa72044e SHA-256: 90d6446b6c35017d419a20617d09f558a9cb60f018a597e9c95b7736a8d66372
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 'PDF_SEO_LINK_FARM'. One of the primary external URIs points to 'https://trafficel.ru/123?utm_term=ethnography+examples+essay', suggesting a tactic to manipulate search engine results or direct users to potentially malicious content. ClamAV also detected this file as 'Pdf.Phishing.Trojan'. While no scripts were explicitly extracted, the PDF structure and link farm heuristic indicate a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafficel.ru/123?utm_term=ethnography+examples+essay PDF link annotation
    • https://fiwuvoreguno.weebly.com/uploads/1/3/4/0/134000104/813a0df7ae312d.pdfIn PDF document text
    • https://kalodutizifurul.weebly.com/uploads/1/3/4/5/134597908/15c540b39b01.pdfIn PDF document text
    • https://mewopaxa.weebly.com/uploads/1/3/4/8/134848883/fekefukotobewawenu.pdfIn PDF document text
    • https://vogoworelo.weebly.com/uploads/1/3/4/2/134266182/9636523.pdfIn PDF document text
    • https://dutajidadu.weebly.com/uploads/1/3/4/7/134730474/sodokazid.pdfIn PDF document text
    • https://fomomeku.weebly.com/uploads/1/3/2/7/132712435/8c72c2e2ea81.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/5fc0dbcbbf71053ccb0ffb78/t/5fc425559ee0f32b87d69ad8/1606690135787/animated_thank_you.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5afd4e98326c0207e28f/1606376190138/juvesobogoduwolizolizuto.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc50f372e537a05ef23cbd8/t/5fcc147ca87f9f1b19c6e99c/1607210108906/jurassic_craft_addon.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc19ab11452f90b7fea4d21/t/5fcc5e83662d5e24e098ede0/1607229059565/wugonisika.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc287be084698658e68a4f0/t/5fc7010748d5672cfb33c89c/1606877448592/truck_driver_city_crush_mod_game_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc13c726609fd0ee793905a/t/5fc3260c145a8629dc17afe6/1606624780650/41571909169.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc713abaa0dc1643a2f70df/t/5fc85ef9e21c7c679ae1cb0a/1606967042926/72588266948.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6d09cbcf5f06bcb74d315/t/5fcc051533187724c4dd8cc5/1607206166552/soccer_football_coaching_skills.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc66c8a8ef7301f8b36d770/t/5fc7acf73ac9c763f4dfa18c/1606921464656/22816246035.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_off0000db7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB7E 5360 bytes
SHA-256: fba5ce7d87ac9c067c27f18b95fcff17b9be1e3ad548fe977db621febcc31844
font_01_sfnt_off0000eda5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA5 10992 bytes
SHA-256: 2da19fe0645c92b0cceb9d51a68bfc49768a32cbd856fa6af43854d75653de2b

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