Malicious PDF — malware analysis report

Static analysis result for SHA-256 5208dce9056850ce…

MALICIOUS

PDF

40.4 KB Created: 2020-08-18 15:31:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0eeaac5f02ebee230c41973ceb60504a SHA-1: 971886a5cb601bf49afdc401d3a6075c75f1b854 SHA-256: 5208dce9056850ce0e3ab7561caad569c4bcb234649029d36b3d2af45a391d39
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=bluetooth+software+for+android+apk'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs hosted on Shopify. The document body, though partially corrupted, contains the same lure text as the redirector URL. The presence of a visual download button further supports the lure. No scripts were extracted, but the primary attack vector appears to be social engineering via a malicious link.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=bluetooth+software+for+android+apk
    • http://files.en.associates.artmark.com/uploads/1/3/1/3/131383651/fikujanopi.pdf
    • http://tedaj.abiblo.com/uploads/1/3/0/7/130775734/pugiv-puwewidu-kewirenasas-sujewekowa.pdf
    • http://files.thirdeyeelixir.com/uploads/1/3/0/9/130969825/4035c4189977.pdf
    • https://cdn.shopify.com/s/files/1/0437/1054/6070/files/page_break_inside_mpdf_not_working.pdf
    • https://cdn.shopify.com/s/files/1/0430/1576/6177/files/pobazotupitezut.pdf
    • https://cdn.shopify.com/s/files/1/0436/8600/2838/files/vonutivexuditopime.pdf
    • https://cdn.shopify.com/s/files/1/0440/8734/5304/files/ceratite_ulcerativa_em_ces.pdf
    • https://cdn.shopify.com/s/files/1/0427/9740/0223/files/14810492871.pdf
    • https://cdn.shopify.com/s/files/1/0428/4488/1059/files/tepevo.pdf
    • https://cdn.shopify.com/s/files/1/0435/9313/8333/files/zosixu.pdf
    • https://cdn.shopify.com/s/files/1/0427/7207/0556/files/pwc_situational_judgement_test_answers.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_off00005f90.bin
89cefab3ae404ddec31b976b0010412a1b2b3f2f14f18524e0985dddca352713		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F90 5336 bytes
font_01_sfnt_off000071bd.bin
4d576d84394e4cbe9aa7bc9a8b3c3233a6e6d596f5deddca344d94144477bea9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71BD 10500 bytes

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