Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1667fa7395754d5…

MALICIOUS

PDF

46.1 KB Created: 2020-08-12 10:31:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd789875b9e60da8b04a0e9c527a67ab SHA-1: 63054fe2b65f77a22edd8b4488e8b289da9bd2ea SHA-256: b1667fa7395754d5f08bd7e3c70428b1fe1ef15295e87fed97e8272d902d80a9
150 Risk Score

Malware Insights

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

The PDF contains a deceptive document body masquerading as an internship certificate request, which is a common lure. It embeds numerous links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.cc/pify?keyword=exemple+de+lettre+de+demande+d+attestation+de+stage+pdf'. This redirector likely leads to further malicious content. The PDF also exhibits characteristics of a link farm, with many external links, some pointing to Shopify domains, potentially for SEO manipulation or to host further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=exemple+de+lettre+de+demande+d+attestation+de+stage+pdf
    • http://files.htrep.com/uploads/1/3/0/7/130776795/9733501.pdf
    • http://files.mangowavecreations.com/uploads/1/3/2/6/132682134/gazawak_kagixe.pdf
    • http://files.electaylin.com/uploads/1/3/2/7/132740320/8322645.pdf
    • http://files.fishforinfo.net/uploads/1/3/1/4/131437775/deeacdb0d0.pdf
    • https://cdn.shopify.com/s/files/1/0435/4162/7029/files/d_d_artificer_5e.pdf
    • https://cdn.shopify.com/s/files/1/0428/7424/1183/files/99892414566.pdf
    • https://cdn.shopify.com/s/files/1/0428/9318/1087/files/lokagokepa.pdf
    • https://cdn.shopify.com/s/files/1/0430/7389/6602/files/57871121562.pdf
    • https://cdn.shopify.com/s/files/1/0429/3053/6614/files/t-_iv_transmission_fluid_autozone.pdf
    • https://cdn.shopify.com/s/files/1/0428/4373/4182/files/goduvafozemo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7496/7965/files/100_examples_of_collective_nouns.pdf
    • https://cdn.shopify.com/s/files/1/0435/3540/1111/files/wubofo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1641/3607/files/77817061428.pdf
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/30459170857.pdf
    • https://cdn.shopify.com/s/files/1/0428/6890/0006/files/wudugokefuzagegiparijewo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4310/2613/files/nowidipujaxesomenujonusu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6559/7342/files/tratamiento_para_caries_dental.pdf
    • https://cdn.shopify.com/s/files/1/0428/7276/6631/files/killer_queen_solo_tab.pdf
    • https://cdn.shopify.com/s/files/1/0430/4420/8789/files/35366467240.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_off00006383.bin
8c5cbbf8dcf072aedab7631b1803c21bb4f1d2502bd54de675f40322142bd09c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6383 5176 bytes
font_01_sfnt_off00007507.bin
249dcc58dde06c64d61ff2026993e175ac16955992814dadb351f683bbd80bfc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7507 12064 bytes
font_02_sfnt_off00009af5.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AF5 4324 bytes

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