Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca17f34c01d27c93…

MALICIOUS

PDF

58.6 KB Created: 2020-12-24 06:03:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d661adf7edce309311c5a30c4007396f SHA-1: 3f8ff47ee92bde7027b61b1717070dfb034062e8 SHA-256: ca17f34c01d27c9364a21eda4fe15a83f408a9b583f4b04a90304275dffc3074
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, a common tactic for SEO spam and phishing campaigns. The heuristic 'PDF_SEO_LINK_FARM' specifically indicates a large number of external links, suggesting an attempt to drive traffic to malicious or deceptive websites. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' further supports the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8132

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffine.ru/strik?utm_term=blue+bottle+stingers
    • https://ganajefij.weebly.com/uploads/1/3/4/8/134884795/kajex_foxujulevigim_bogefozeka_xaxitipizapoj.pdf
    • https://bowiromifax.weebly.com/uploads/1/3/4/6/134613330/55e31e7d40db1.pdf
    • https://cdn-cms.f-static.net/uploads/4410000/normal_5fa9bbc8ca25f.pdf
    • https://static.s123-cdn-static.com/uploads/4411270/normal_5fdcdd23d8e2e.pdf
    • https://gosidobesek.weebly.com/uploads/1/3/4/0/134017516/8311713.pdf
    • https://static.s123-cdn-static.com/uploads/4405929/normal_5fe17fb4e6ddf.pdf
    • https://cdn.sqhk.co/wuluzajiroz/iM55Mif/android_messages_download_failed.pdf
    • https://ferateritilew.weebly.com/uploads/1/3/4/2/134265971/ketujukisasixun.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/5cba73f5-c970-4e97-82dc-2f4a18ef450c/codewars_sql_answers.pdf
    • https://uploads.strikinglycdn.com/files/1363433a-34d3-4562-80ee-6bbfd5854874/section_1_reinforcement_cell_division_and_mitosis_worksheet_answers.pdf
    • https://uploads.strikinglycdn.com/files/bec00026-cd09-493e-b200-6470cac7d4c0/houses_for_sale_in_troy_ohio_under_90000.pdf
    • https://uploads.strikinglycdn.com/files/d1e5c37c-a1d2-43be-85e7-cbcf080fd779/nijutazaleboramubize.pdf
    • https://uploads.strikinglycdn.com/files/07a7d03d-ee79-4e27-b5cd-1ecf3787b502/28741868395.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc55.bin
b382696c18719d29e875b7e04066b0300aa309e70b94e3bd30ece2b74f781136		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC55 4716 bytes

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