Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1e71b4c873e4311…

MALICIOUS

PDF

41.5 KB Created: 2020-08-25 22:11:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 750f7ab44778fa0eb0639b8da5648709 SHA-1: 1e5261c059c78b187893b80f18269a4f4a283c4c SHA-256: b1e71b4c873e4311375dc0ab46d7b0a1735057d295fb777505ba4c18912c5341
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are hosted on Shopify but point to potentially malicious redirectors. The primary malicious link, 'https://ttraff.com/pify?keyword=a+memory+of+light+download', is identified as a redirector to malicious infrastructure. The document body, though heavily obfuscated, contains this URL and appears to be a lure for a download. No scripts were extracted, and the PDF structure itself is the primary vector.

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=a+memory+of+light+download
    • http://tipefejim.mydaughtercreations.com/uploads/1/3/1/6/131636725/zutusupa-molum.pdf
    • http://files.msdurrett.com/uploads/1/3/2/6/132681880/tanedo_nugal_bovusamov.pdf
    • http://files.brucejamesmenzies.com/uploads/1/3/1/0/131069899/6159189.pdf
    • http://vasekem.editheztilizta.com/uploads/1/3/2/6/132695278/betamalivi_dovafos_negofilivilovig_dimeranexiwaru.pdf
    • http://files.unitydenton.org/uploads/1/3/0/8/130874250/danatinigamiza_toniraso_kekuxiziki.pdf
    • https://cdn.shopify.com/s/files/1/0430/6495/0938/files/67781712367.pdf
    • https://cdn.shopify.com/s/files/1/0433/2394/9224/files/adda52_poker_apk.pdf
    • https://cdn.shopify.com/s/files/1/0428/6047/8630/files/skull_pill_report.pdf
    • https://cdn.shopify.com/s/files/1/0438/7821/9944/files/97639545299.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/98385666630.pdf
    • https://cdn.shopify.com/s/files/1/0437/2021/2629/files/57328667921.pdf
    • https://cdn.shopify.com/s/files/1/0440/1764/7766/files/bosch_tassimo_manual_yellow_light.pdf
    • https://cdn.shopify.com/s/files/1/0436/4363/3822/files/40024352481.pdf
    • https://cdn.shopify.com/s/files/1/0428/9350/8771/files/fejabubofi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7310/1219/files/lucidpress_free_tri-_fold_brochure_templates.pdf
    • https://cdn.shopify.com/s/files/1/0434/2562/8327/files/flyff_blade_equipment_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/7303/6697/files/82764865531.pdf
    • https://cdn.shopify.com/s/files/1/0431/4077/6093/files/43753204044.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_off000063ab.bin
3ef2fafccbc472d67271c4beeb207b99aefba71ae51c7f0b9d23b235c6accb6e
pdf-font-stream PDF embedded font (sfnt) at offset 0x63AB 5328 bytes
font_01_sfnt_off000075b4.bin
e5ca1c3e711422c7a34fd2da64b00f8b65938e3791a2cd11e74dce2bf1da1a94
pdf-font-stream PDF embedded font (sfnt) at offset 0x75B4 10372 bytes