Malicious PDF — malware analysis report

Static analysis result for SHA-256 6614031f781976e2…

MALICIOUS

PDF

121.9 KB Created: 2020-08-03 11:13:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 344eb7be9e342124e894b180da027135 SHA-1: 3a29fa8b4e389411a1ef5bac72a6c5dcbf9d71ae SHA-256: 6614031f781976e26cc9cb76f1ab8a0ef9439571bf3d83a5341cf002a5141f85
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to what appears to be a link farm designed for SEO manipulation, with one critical link identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector found by heuristics. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for an advance-fee scam.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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.
  • 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://ttraff.ru/pify?keyword=transport+phenomena+bird+stewart+lightfoot+pdf
    • http://files.cwwdelta.com/uploads/1/3/0/7/130740249/lodejesesaf-tukudovilew-wusedepubok.pdf
    • http://files.fangirlyarn.com/uploads/1/3/1/3/131383826/tiduzebubasu.pdf
    • http://files.stmanvel.org/uploads/1/3/2/3/132302759/xaxololavibinarele.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/7301/0850/files/62950962589.pdf
    • https://cdn.shopify.com/s/files/1/0428/8721/7319/files/kubodeneso.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/2777116224.pdf
    • https://cdn.shopify.com/s/files/1/0429/2925/8649/files/departamentos_de_guatemala.pdf
    • https://cdn.shopify.com/s/files/1/0437/7817/9221/files/7603298418.pdf
    • https://cdn.shopify.com/s/files/1/0433/5871/6054/files/59861840270.pdf
    • https://cdn.shopify.com/s/files/1/0435/0446/8134/files/54212110852.pdf
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/66948010124.pdf
    • https://cdn.shopify.com/s/files/1/0440/6404/7269/files/34569594708.pdf
    • https://cdn.shopify.com/s/files/1/0430/2995/4721/files/wutafaside.pdf
    • https://cdn.shopify.com/s/files/1/0436/3363/9584/files/25694737854.pdf
    • https://cdn.shopify.com/s/files/1/0430/7278/2489/files/gisuwenujosamikajugok.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_off0001a032.bin
fc29a9ef224f7d8381bbf8b3f6cc3f405bedebe161fa7e5391aca14874b7ecda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A032 5636 bytes
font_01_sfnt_off0001b342.bin
3f2edb69a1b3c03933c121daa3cfdec76d40ac69211d0ef3d7319dc3261f01e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B342 11288 bytes

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