Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a0cc770422ac8f4…

MALICIOUS

PDF

75.2 KB Created: 2020-12-15 05:01:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 3ef6abfb7725846c6219e7b98ff0fd8c SHA-1: 23c39ed5895d6a9bd8ea4e7148e2c9fac58e5080 SHA-256: 6a0cc770422ac8f4a0e9b2d3123f085ff4d2e99bc3336011904ed09ad11f446f
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. This indicates the document's primary purpose is to lure the user to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the redirector suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/123?utm_term=autosomal+vs+sex+linked+traits In PDF document text
    • https://xasukibumit.weebly.com/uploads/1/3/4/7/134749231/8774658.pdfIn PDF document text
    • https://noderewowiful.weebly.com/uploads/1/3/4/5/134596184/kigusot.pdfIn PDF document text
    • https://xavujome.weebly.com/uploads/1/3/0/7/130739328/lokigaregawewomotux.pdfIn PDF document text
    • https://lozusometuzasop.weebly.com/uploads/1/3/4/7/134741376/ec9205ade70a3c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static1.squarespace.com/static/5fc0ba3b0a2757459be1f9cb/t/5fc3df022dd96f591864f94d/1606672130662/1294355265.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23846e48-4097-4e3b-b1e6-0df79d2549e2/27500196547.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2f978f9866f3fd2e1c9ef/t/5fd01b61a4b4ef2db699b7aa/1607474017390/42749396183.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc29eebabaecd33182d3b3b/t/5fc387095147b14804a056f9/1606649611193/davatosi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5bcbe6609fd0ee7b2a963/t/5fc6c30f6beae454314fd044/1606861584377/gajetakikudisejifepebe.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc54cfdea4a794d566240f0/t/5fd663e27fc52c2069249af8/1607885794935/sezafolajibibi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4586ba0f-09e6-4bb1-b66b-c3180eecadb0/74735533843.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c2ac8ef7301f8b3249da/t/5fc6d39b56cd4459b3a5ab75/1606865819782/relabaxevudan.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1ac0c8787e87989717060/t/5fc334daf8cdb769c64ba9f2/1606628571561/38857280958.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c76c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC76C 5036 bytes
SHA-256: 9077231881becc299e052cf1b94f4ab1a4d07e9c75f20629981ebd5ec9b6740c
font_01_sfnt_off0000d870.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD870 10512 bytes
SHA-256: 7d797a26168c5d44b347211928a9a3e2a5009d8aaca4df3a13f74be6c521860d
font_02_sfnt_off0000fc6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC6E 16224 bytes
SHA-256: 4362e686776cae9b5e877a8e5de4a1ff5ae9966626bcf1046762b8e3a01bbea2
font_03_sfnt_off000111bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111BB 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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