Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6bfcf2a434e2cde…

MALICIOUS

PDF

40.0 KB Created: 2020-08-22 13:26:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76da8fb18cbe22eda9c41a74af0ce644 SHA-1: 7aa30a2193507e61e186ac5a67a0c0c6e73a4768 SHA-256: e6bfcf2a434e2cdeb7f02d3f58ea673ad00fd76617536ef1573500458f58f4fd
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Addends T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=como+se+forma+un+enlace+peptidico'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking title related to peptide bonds, likely a lure. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • 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.com/pify?keyword=como+se+forma+un+enlace+peptidico
    • http://files.maenadproductions.com/uploads/1/3/0/7/130739472/girijawovopuzuzu.pdf
    • http://files.waverleyplastics.com/uploads/1/3/1/4/131483138/718588.pdf
    • https://cdn.shopify.com/s/files/1/0427/8750/4294/files/winchester_1200_defender.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dagezaluvonanapukinuwit.pdf
    • https://cdn.shopify.com/s/files/1/0431/6073/1808/files/vogulesixoraduwufeb.pdf
    • https://cdn.shopify.com/s/files/1/0432/0316/6369/files/58135176455.pdf
    • https://cdn.shopify.com/s/files/1/0430/1501/2511/files/84418242231.pdf
    • https://cdn.shopify.com/s/files/1/0431/3264/9636/files/95750604105.pdf
    • https://cdn.shopify.com/s/files/1/0435/5578/2817/files/conceptual_physics_12th_edition_online.pdf
    • https://cdn.shopify.com/s/files/1/0436/5480/7717/files/add_heroku_remote.pdf
    • https://cdn.shopify.com/s/files/1/0429/7093/9541/files/business_research_proposal_sample.pdf
    • https://cdn.shopify.com/s/files/1/0432/9429/4171/files/bufotawom.pdf
    • https://cdn.shopify.com/s/files/1/0437/7654/0834/files/kasivinogez.pdf
    • https://cdn.shopify.com/s/files/1/0431/0476/4068/files/dorariba.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/rosofarijijerexekegameger.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b5d.bin
f4a90f8069bba00bff79b722db989c74800b7643582946c781a70b6ccc8330b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B5D 5208 bytes
font_01_sfnt_off00006cfd.bin
b508bfee67a6b470a8152035c4fc209a1d972c2e7d7e3e64d3885ba3ad81d2de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CFD 11248 bytes

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