Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd0461ef1d12b9d3…

MALICIOUS

PDF

94.1 KB Created: 2020-08-03 19:45:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8078fed9f5471268c148678eea25693a SHA-1: fe7362194b5036adce823f894295479209554e7d SHA-256: cd0461ef1d12b9d379fb8e3c1e0db04af9bb61073cafe8085dc7d820a732a478
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=procardia+davis+pdf'. Additionally, it exhibits characteristics of a link farm, with numerous external PDF links, including one to 'https://cdn.shopify.com/s/files/1/0437/4121/6917/files/irs_form_8615.pdf'. The document body, though heavily obfuscated, contains fragments that suggest urgency, aligning with the 'SE_URGENCY_LURE' heuristic.

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.cc/pify?keyword=procardia+davis+pdf
    • http://files.mnwelcomehomevets.org/uploads/1/3/1/8/131856173/495aa981b043.pdf
    • http://files.nprycetest.com/uploads/1/3/1/4/131453818/82524.pdf
    • http://xulolizo.ecoustic.dk/uploads/1/3/1/3/131379246/menulidadezonenudume.pdf
    • http://vogaso.aquaticamarine.com/uploads/1/3/0/9/130968921/rikogesewajife-pegatogoson-nuvoru.pdf
    • https://cdn.shopify.com/s/files/1/0437/4121/6917/files/irs_form_8615.pdf
    • https://cdn.shopify.com/s/files/1/0432/5552/9640/files/bibovanevudokabugifaximup.pdf
    • https://cdn.shopify.com/s/files/1/0434/3965/3030/files/guitar_hero_3_cheats_xbox_360.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37394074323.pdf
    • https://cdn.shopify.com/s/files/1/0428/9763/7535/files/70634209994.pdf
    • https://cdn.shopify.com/s/files/1/0436/9920/8346/files/relebafuvotukeketuzapino.pdf
    • https://cdn.shopify.com/s/files/1/0435/6440/0798/files/love_dont_change.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/kubofekema.pdf
    • https://cdn.shopify.com/s/files/1/0431/7996/6628/files/89110771834.pdf
    • https://cdn.shopify.com/s/files/1/0431/5296/5789/files/67759936507.pdf
    • https://cdn.shopify.com/s/files/1/0428/7728/8611/files/dekibumu.pdf
    • https://cdn.shopify.com/s/files/1/0440/9648/7576/files/gafipepiralewijame.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/neponexitimukewafulixap.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_off000135be.bin
4ea59a8254880ac6be759b9b270cf2864b4af6e456aac31d1c5f8271dd0ee3d1
pdf-font-stream PDF embedded font (sfnt) at offset 0x135BE 5180 bytes
font_01_sfnt_off00014774.bin
69d29979674ccef4ce32c2f9033cbfc5aa4df8f2858da9d30e1efabf4edd4936
pdf-font-stream PDF embedded font (sfnt) at offset 0x14774 10440 bytes