Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a85526632d5890e…

MALICIOUS

PDF

44.8 KB Created: 2020-08-21 18:49:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dfa6a72889ad0d0f44471dbba411c481 SHA-1: 98d04d8656082cc6ee7aba10d3af49cc3b01314a SHA-256: 9a85526632d5890ee6eed076c4132e5339323f54f376c3d336aceb231c8c5be7
142 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL disguised as a 'China visa form paper size'. The SE_CALLBACK_LURE heuristic indicates a phishing or tech-support scam context. The primary malicious URL is https://ttraff.com/pify?keyword=china+visa+form+paper+size, which likely leads to further malicious content or exploits.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=china+visa+form+paper+size
    • http://saduj.niralidevgan.com/uploads/1/3/1/0/131070786/ferilugetukojol_kigezojodut_jomezes_kixuzonujetis.pdf
    • http://files.kellycozzone.com/uploads/1/3/1/4/131454286/7240642.pdf
    • http://files.mrsignworks.com/uploads/1/3/0/7/130738620/vigonoselarap-nuwagimoxe-pamitini-nifad.pdf
    • http://files.oldklaverackbrewery.com/uploads/1/3/1/4/131406507/b78771744c.pdf
    • http://bowuxiv.comforthomeinspections.net/uploads/1/3/1/4/131405927/58577.pdf
    • https://cdn.shopify.com/s/files/1/0443/0761/1804/files/risijasibizivavenositi.pdf
    • https://cdn.shopify.com/s/files/1/0447/0764/3545/files/staphylococcus_aureus_bacteria.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/milabamalexu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/6445923014.pdf
    • https://cdn.shopify.com/s/files/1/0434/5816/6949/files/carols_for_choirs_5.pdf
    • https://cdn.shopify.com/s/files/1/0448/3383/3122/files/audio_visual_media_in_education.pdf
    • https://cdn.shopify.com/s/files/1/0432/8508/6374/files/351232873.pdf
    • https://cdn.shopify.com/s/files/1/0435/7790/1219/files/cefr_language_levels.pdf
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/air_pollution_control_engineering_second_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/vatarodepukaren.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_off0000729d.bin
dc0b9710366b4c5289166c75307700aa952a6861cf0e51c656a46cf385bcebc4
pdf-font-stream PDF embedded font (sfnt) at offset 0x729D 5124 bytes
font_01_sfnt_off000083ec.bin
c8fd84e67ee85d0681c05988d17913953968932428e7f00bb090a53d57fad0e4
pdf-font-stream PDF embedded font (sfnt) at offset 0x83EC 10144 bytes