Malicious PDF — malware analysis report

Static analysis result for SHA-256 37c17f915dbd151d…

MALICIOUS

PDF

78.4 KB Created: 2020-12-10 09:33:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc6c08f6307a352717b31a88f3a8e73f SHA-1: 7afd7b02f7b80a5f04d81de2b7364e222ac48647 SHA-256: 37c17f915dbd151dff1f2d1f3b07ceda32c7d55e1172973ff5b703dbfe676882
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a link disguised as a download for 'Joana's leveling guide'. This link, identified as a malicious redirector, points to 'traffmen.ru'. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggests this is an advance-fee fraud attempt, likely leading to further malicious content or phishing. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://traffmen.ru/strik?utm_term=joana%2527s+leveling+guide+download
    • https://cdn-cms.f-static.net/uploads/4368506/normal_5fa68c4949dbd.pdf
    • https://static.s123-cdn-static.com/uploads/4467027/normal_5fcff7d570852.pdf
    • https://static.s123-cdn-static.com/uploads/4417024/normal_5fce9b467b387.pdf
    • https://cdn-cms.f-static.net/uploads/4388040/normal_5f92cf3aafbef.pdf
    • https://cdn-cms.f-static.net/uploads/4485442/normal_5fbe292719188.pdf
    • https://cdn-cms.f-static.net/uploads/4413842/normal_5f9c22101c25a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd07b59d104e5f152f3eaa/1606223798700/89164214655.pdf
    • https://s3.amazonaws.com/remufuzu/afterlight_gratis_di_iphone.pdf
    • https://s3.amazonaws.com/kukupunopedon/zorur.pdf
    • https://s3.amazonaws.com/soxukowotomaj/flash_flight_simulator_fondy.pdf
    • https://static1.squarespace.com/static/5fc066bd9955c744b5390948/t/5fc108b3f81c9a2a0cc6a53a/1606486196501/wubanomewipakijotajaneki.pdf
    • https://static1.squarespace.com/static/5fc39e3c5e8e827d429ee1bf/t/5fc49187cb3e0f5771e18196/1606717831707/spirit_animals_books_review.pdf
    • https://s3.amazonaws.com/lumixi/31181127141.pdf
    • https://s3.amazonaws.com/jujojomojemiz/14019324137.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed2b.bin
e48073703f5cc3f91c770848587876797249a1723ab6e1b043e50b6d59cf42d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED2B 5072 bytes
font_01_sfnt_off0000fe9c.bin
c8503f21cdb5c19221453367183a51ded4afda198063bcabd921fec886ca5f96		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE9C 14448 bytes

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