Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb28cab3861ee5a2…

MALICIOUS

PDF

39.0 KB Created: 2020-08-15 05:24:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03c8068164cc22d5dc86ceb47c0e09ee SHA-1: cc2971094887d6ba45d1ae233f785f68a66f1bdf SHA-256: cb28cab3861ee5a220443f6f25dd5fbc4cfb4b2e4d698f6f4ce01ebbfd7c8b82
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'mandated reporter portal michigan' and the URL itself, suggesting a lure. The PDF also exhibits a link farm behavior, with numerous links to Shopify-hosted PDFs, potentially to obscure the malicious redirector. The presence of urgency language further supports the phishing pretext.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=mandated+reporter+portal+michigan
    • http://files.tulsapoloclub.com/uploads/1/3/0/7/130775342/4278861.pdf
    • http://files.hertruthinwords.com/uploads/1/3/1/3/131379578/6878728.pdf
    • https://cdn.shopify.com/s/files/1/0439/4074/1275/files/98834316688.pdf
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/jesojadefokadokadolaleve.pdf
    • https://cdn.shopify.com/s/files/1/0429/9830/0823/files/sumibemogelefobugovalux.pdf
    • https://cdn.shopify.com/s/files/1/0437/2830/6330/files/ecosystem_worksheet_grade_3.pdf
    • https://cdn.shopify.com/s/files/1/0431/6702/3253/files/anastasia_once_upon_a_december_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0433/3666/3208/files/5825950641.pdf
    • https://cdn.shopify.com/s/files/1/0431/1551/1968/files/40507431225.pdf
    • https://cdn.shopify.com/s/files/1/0440/4301/0213/files/wow_classic_steelsnap.pdf
    • https://cdn.shopify.com/s/files/1/0437/5887/8881/files/tulurigexajetoxa.pdf
    • https://cdn.shopify.com/s/files/1/0431/8851/9074/files/kudemak.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_off00005aa5.bin
5b278d2bb62864b7f4306ae09b579ad5c97c51952664847c235948ac58ab8a30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA5 5312 bytes
font_01_sfnt_off00006c87.bin
26667809e2fea4b172b9f53621da12a88b7ca9aafba3c4ab9e5477217102a60f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C87 10232 bytes

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