Malicious PDF — malware analysis report

Static analysis result for SHA-256 b39f66981f9ed2d3…

MALICIOUS

PDF

37.0 KB Created: 2020-08-24 08:26:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88fce8a6b7af5f0b3d8a926424de8016 SHA-1: 3fbed8a0b98be0f190c50696f4837e058d19e37d SHA-256: b39f66981f9ed2d3f3b9a8fb2bdd3472e55340e28220cd718dfcd9839aa9d456
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body also contains this URL, suggesting a lure to external content. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains, likely for SEO manipulation or to host further malicious content. The primary malicious URL is 'https://ttraff.com/pify?keyword=pearson+world+history+assessment+answers'.

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=pearson+world+history+assessment+answers
    • http://xixafeko.thecreativeplayhouse.com/uploads/1/3/1/6/131606289/b4127.pdf
    • http://dojexolit.jaxjacobsen.com/uploads/1/3/1/1/131164250/9393817.pdf
    • http://files.covenantasheboro.com/uploads/1/3/1/4/131453902/kifebaki-wujapefe-solijelitekok.pdf
    • http://pitoret.nileswesttheatre.com/uploads/1/3/0/8/130874043/sijinuwikiwefijajaki.pdf
    • https://cdn.shopify.com/s/files/1/0434/9244/2277/files/wekupizezunur.pdf
    • https://cdn.shopify.com/s/files/1/0438/3067/3565/files/supekadunizodewef.pdf
    • https://cdn.shopify.com/s/files/1/0434/0416/5285/files/joint_venture_accounting_entries.pdf
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/tukujato.pdf
    • https://cdn.shopify.com/s/files/1/0450/2175/7590/files/diviser_un_en_plusieurs_parties.pdf
    • https://cdn.shopify.com/s/files/1/0431/7341/3032/files/64474697583.pdf
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/58639731372.pdf
    • https://cdn.shopify.com/s/files/1/0429/4295/5687/files/soa_exam_p_sample_questions.pdf
    • https://cdn.shopify.com/s/files/1/0427/4126/8647/files/arithmetic_logic_unit_design.pdf
    • https://cdn.shopify.com/s/files/1/0434/7641/8713/files/26869275775.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000486e.bin
5610572c7a7cd76486dc1a6c97632bae42162757ef8c0b4d6a91200274c1fc52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x486E 5048 bytes
font_01_sfnt_off0000596f.bin
d85bad38ce7211cc4644d1f3bfd79a97fb373d641e32be6804e87e372435c4fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x596F 9256 bytes
font_02_sfnt_off00007914.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7914 4324 bytes

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