Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0779ecd4e6fc71e…

MALICIOUS

PDF

40.5 KB Created: 2020-08-24 21:00:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5f365e5c6e6b97c83a3d6aaf089ff26 SHA-1: 8245c7137f6890d94a04a3fbbf03468ae8504551 SHA-256: c0779ecd4e6fc71e4bcb29b0a424a7bc45b6d5ded9a01fcc2701acf9c016907b
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=baixar+whatsapp+para+android', suggesting a lure to download an application. The presence of a link farm heuristic further indicates a malicious intent to distribute content via numerous links.

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.ru/pify?keyword=baixar+whatsapp+para+android
    • http://gumovum.wendysintoenglish.com/uploads/1/3/0/7/130739664/124809.pdf
    • http://silugurip.crawfordphoto.org/uploads/1/3/2/6/132695478/gomegobewe.pdf
    • http://files.epgxc.com/uploads/1/3/1/4/131438567/9927068.pdf
    • https://cdn.shopify.com/s/files/1/0431/0587/8170/files/nidosazukirixexisekavew.pdf
    • https://cdn.shopify.com/s/files/1/0435/4605/0714/files/92698974681.pdf
    • https://cdn.shopify.com/s/files/1/0431/0935/1585/files/vaxijula.pdf
    • https://cdn.shopify.com/s/files/1/0434/4561/6792/files/mataji_aarti_video.pdf
    • https://cdn.shopify.com/s/files/1/0437/8784/5790/files/adding_subtracting_and_multiplying_polynomials_practice.pdf
    • https://cdn.shopify.com/s/files/1/0434/7848/3097/files/mathematical_physics_by_satya_prakash.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/69278686292.pdf
    • https://cdn.shopify.com/s/files/1/0432/2823/3885/files/71553124048.pdf
    • https://cdn.shopify.com/s/files/1/0433/4836/1375/files/vumekurezozesoriw.pdf
    • https://cdn.shopify.com/s/files/1/0432/2027/1259/files/lelisotegi.pdf
    • https://cdn.shopify.com/s/files/1/0427/7207/0556/files/zotemilotogosim.pdf
    • https://cdn.shopify.com/s/files/1/0430/5852/8405/files/56292942639.pdf
    • https://cdn.shopify.com/s/files/1/0439/8632/1566/files/rovevavavofujevuvuzo.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_off00005e52.bin
76893fcee359c17173b062c113e01ff4e60b1e0942bdb8dde85ed9a3522b6d45
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E52 5224 bytes
font_01_sfnt_off00007023.bin
822202222b677743de5dfaf2430a38074e8c55cb529dd8a3e97c3981f02cd07c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7023 10984 bytes