Malicious PDF — malware analysis report

Static analysis result for SHA-256 b90b3ea1250c64cf…

MALICIOUS

PDF

41.5 KB Created: 2020-08-09 16:17:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51130fc15660e636d72cfe43ad43abd6 SHA-1: e88279c6fd8a055ce82e747903ec4c25b25a738c SHA-256: b90b3ea1250c64cfeffe1e4a8d94150af32f360976a8f43d9a4f66d1c1140b63
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary malicious link, 'https://ttraff.cc/pify?keyword=alkaline+water+benefits+pdf', is designed to lead users to potentially harmful content. The document body, though heavily obfuscated, contains references to the same URL and a Shopify domain, suggesting a lure to a malicious site disguised as a PDF download. The presence of numerous external links indicates a link farm strategy to obscure the ultimate destination.

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.cc/pify?keyword=alkaline+water+benefits+pdf
    • http://remosabi.beaverstatedentalequipment.com/uploads/1/3/2/6/132695569/goworidofamivaj_wipejevew_nugagoniloxo_luvefepu.pdf
    • http://files.captivatephoto.com/uploads/1/3/2/6/132681647/doxipubip.pdf
    • http://files.guntersvillelionsclub.com/uploads/1/3/1/4/131407135/wewilemutinaxin.pdf
    • http://files.projectpave.org/uploads/1/3/0/9/130969699/4374739.pdf
    • https://cdn.shopify.com/s/files/1/0440/4543/5030/files/centenarian_act_of_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/7729/5516/files/23617560753.pdf
    • https://cdn.shopify.com/s/files/1/0430/7546/9473/files/xubozaw.pdf
    • https://cdn.shopify.com/s/files/1/0438/0730/9986/files/57331972758.pdf
    • https://cdn.shopify.com/s/files/1/0433/4570/7162/files/dikinazozaridemuta.pdf
    • https://cdn.shopify.com/s/files/1/0435/7714/7547/files/16537208132.pdf
    • https://cdn.shopify.com/s/files/1/0431/3418/9734/files/zutuwozir.pdf
    • https://cdn.shopify.com/s/files/1/0430/3503/3757/files/wimubewubufapal.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37144816260.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/82973104521.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/mevoxivulasezumegaki.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/20999439268.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_off00006471.bin
884ea403e9e644d42c2ab1398f2b2c9f47ec2eaba7af3b7f2434275b65bb376b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6471 5320 bytes
font_01_sfnt_off0000769e.bin
d9caaf7d5ec1e10ffc022fe9c409db6226c3a22d82395aa773733f938d7fe697		 pdf-font-stream PDF embedded font (sfnt) at offset 0x769E 10112 bytes

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