Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa6379897c48de77…

MALICIOUS

PDF

41.6 KB Created: 2020-08-15 14:39:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61d0f60996afa808d37673f762a15082 SHA-1: d9c093dfbf06bdb8f41eb5c051f4784120d61484 SHA-256: aa6379897c48de77849e3e60762fbaa215ceed502a90a85508cce517ade76571
128 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, ttraff.com, disguised as a free template for an online recruitment system. The document also contains a large number of external links, many pointing to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning attempt. The urgency lure heuristic further supports the social engineering aspect of this attack.

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=free+template+for+online+recruitment+system
    • http://files.columbiadentcenter.com/uploads/1/3/0/9/130969910/jubegonakajij-desagomabof-sateno-pikilolot.pdf
    • http://files.fusiliersheep.ca/uploads/1/3/1/4/131453990/sevarasekaz.pdf
    • http://files.angelfacejewellery.com/uploads/1/3/2/7/132712222/setebapuxe-vefeke-magulilobuj-monazofisikef.pdf
    • https://cdn.shopify.com/s/files/1/0429/9191/1066/files/bixobas.pdf
    • https://cdn.shopify.com/s/files/1/0438/4253/5574/files/50844559396.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jazaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/manzil_quran.pdf
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/lafarigeliguguvidigonaxa.pdf
    • https://cdn.shopify.com/s/files/1/0431/6001/0912/files/13697861485.pdf
    • https://cdn.shopify.com/s/files/1/0438/2903/5158/files/83302987817.pdf
    • https://cdn.shopify.com/s/files/1/0431/1449/6161/files/adblock_pro_apk_root.pdf
    • https://cdn.shopify.com/s/files/1/0429/5458/8316/files/66876814961.pdf
    • https://cdn.shopify.com/s/files/1/0447/5600/9111/files/miseruludure.pdf
    • https://cdn.shopify.com/s/files/1/0438/8706/7291/files/adverbial_clauses_exercises_advanced.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_off000064b5.bin
7527493f0a2a5841909862b51ef5a981f2449f8d9224737c08a7ac49e317d668		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64B5 5216 bytes
font_01_sfnt_off00007661.bin
19f1d434fe1260564558364ae0632a8e9f31ef5f5ff51fa3c39775f6b51a4cf3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7661 10180 bytes

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