Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd949d6321b21d5c…

MALICIOUS

PDF

72.9 KB Created: 2020-11-14 13:19:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 18dd57f3c25fcf0a2793ccd8a1791d54 SHA-1: 39d62c1800bf5198c65f695fbc9c78015dd73c24 SHA-256: dd949d6321b21d5cbd58daf94075fd6fc4cd4ece919d9fde62d5bd7c6ac5e31a
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing or link farm attack. It contains numerous external links, including one pointing to 'trafffi.ru', suggesting an attempt to redirect users to malicious or deceptive content. The PDF structure and embedded links indicate a tactic to distribute further malicious content or lead users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://trafffi.ru/strik?utm_term=gujarati+movie+chhello+divas+2+downl PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426408/normal_5fae50bfbee71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454670/normal_5fa89982836d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412757/normal_5f9468308f6bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407306/normal_5faae9fa1d03e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411922/normal_5f9667a626cbb.pdfIn PDF document text
    • https://dokakida.weebly.com/uploads/1/3/1/3/131380589/f7c167f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448137/normal_5fad91e6defde.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375203/normal_5f8fd7bb61826.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/vcds_18._9_full.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/all_bank_name_in_india.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/69118533156.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/thermador_wall_heater.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/warifegi.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/waruwetodobowidotepujeki.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000d4ae.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xD4AE 11048 bytes
SHA-256: c4e0ceb22f029b79b316b7ed13d2aad37a4b6cc37a078122b4431ebd199b7f88
font_00_sfnt_off0000c1d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1D6 5572 bytes
SHA-256: 7bc452f3e35d25c032c3ca12eaa0221b1a3e95a737ce4a1f2a72191f300001fc
font_02_sfnt_off0000f3ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3EA 10080 bytes
SHA-256: c1c6d23c9375425f343c2ca1dbecf65f6e3ef59f28ad06dd550825a6561f46f6

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