Malicious PDF — malware analysis report

Static analysis result for SHA-256 2982006e69755980…

MALICIOUS

PDF

85.6 KB Created: 2020-12-17 16:46:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 530a932ae12f356327de5540a207ec80 SHA-1: 1d6c8cd3585170c5de6d6d8b3a62d4fb2a0fd236 SHA-256: 2982006e697559800a5ae7aa875a5a4e77c744a9d4296998e2274c95b3e8b398
212 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The heuristic firings indicate this PDF is part of a link farm designed to direct users to potentially harmful sites. The ML classifier and ClamAV detection further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6899

Heuristics 4

  • 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.
  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gettraff.ru/strik?utm_term=fundamentals+of+physics+textbook+10th+edition+pdf
    • https://nefositasin.weebly.com/uploads/1/3/4/3/134310380/futaxevefosidezom.pdf
    • https://cdn-cms.f-static.net/uploads/4369777/normal_5f945e6d1f37c.pdf
    • https://cdn-cms.f-static.net/uploads/4408711/normal_5fc0c2ba06c75.pdf
    • https://dopukabaluboraj.weebly.com/uploads/1/3/4/4/134472891/5177663.pdf
    • https://cdn-cms.f-static.net/uploads/4368497/normal_5fd66ca47d45b.pdf
    • https://vadazexo.weebly.com/uploads/1/3/4/6/134646317/8990250.pdf
    • https://wozuwonasanava.weebly.com/uploads/1/3/1/4/131483955/vozumimewot-memoxoviw.pdf
    • https://rowurasivove.weebly.com/uploads/1/3/4/3/134357219/6146308.pdf
    • https://cdn-cms.f-static.net/uploads/4368736/normal_5fb46eb45b796.pdf
    • http://www.opentle.org
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/3e7148a6-e587-4e55-bc5e-80c9c7f95c7e/butterfly_short_story_in_english.pdf
    • https://uploads.strikinglycdn.com/files/2ca923db-4ec7-4056-a1f2-ddd4e19ab324/75841112447.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf0cb73299f0c5438bb58/1606217932992/gidizozinaligopur.pdf
    • https://static1.squarespace.com/static/5fc5a56f6b97992eb57bf598/t/5fc97035237852767823e546/1607036982409/xuwalalixipuzudenadatiwow.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4d3c9d793648408474b5/1606372669061/madina_book_2_sharah.pdf
    • https://static1.squarespace.com/static/5fc10dd611f6a419848684c6/t/5fcb9a9db495bd2028246a6a/1607178910167/electric_meter_circuit_breaker_replacement.pdf
    • https://static1.squarespace.com/static/5fc19c025e8e827d4292db12/t/5fd0a6adcb6bfe602c552ac0/1607509678093/rogawuzixoxozupuvamikot.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4c545147b14804297367/1606372436839/section_8_inspection_checklist_nyc.pdf
    • https://static1.squarespace.com/static/5fc002e7e5c7695ca996b6a8/t/5fc29697e18c5c478e4ff818/1606588057111/water_potential_problems_worksheet_answer_key.pdf
    • http://www.gnu.org/licenses/gpl.html
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00011201.bin
9741aa9aba594ad1617bf6a51c1f63920585d3281416297233bf9d99169cf133		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x11201 17812 bytes
font_00_sfnt_off0000fe48.bin
1042cd090931421333b59650a883ec5e39e603945e0178d761e67a3940c5a524		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE48 5820 bytes

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