Malicious PDF — malware analysis report

Static analysis result for SHA-256 679d515874508038…

MALICIOUS

PDF

38.3 KB Authoring application: Adobe PDF Library 9.0
MD5: 86ce0bc4b875fa2eab60c64bbfa4cd85 SHA-1: 2279f16fdca0bad8df8d7e3e0e1f4f5381af3b01 SHA-256: 679d515874508038c3874562d6ee14e2a80e8c7c9f35f8bc62306adf2723bb11
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests a tactic to redirect users to potentially malicious websites or to manipulate search engine results. The ClamAV detection and ML classifier further support its malicious nature, classifying it as phishing or a similar threat. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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 http://findingmybeautiful.com/uploads/1/3/0/6/130620510/8a8776fb70.pdf
    • http://sebefawan.kaluga-land.ru/uploads/2020/01/28/lapijawuduvo_xegudibe.pdf
    • http://mkwpartners.com/uploads/1/3/0/5/130546183/3e672c9840d245.pdf
    • http://gasa.thetracker.online/uploads/2020/01/28/kimivaj_sunomufowawafa_narezizox_tazajosulep.pdf
    • http://kab.agicole-acces.com/uploads/2020/01/29/1571058.pdf
    • https://zizozujedi.weebly.com/uploads/1/3/0/5/130540493/8327010.pdf
    • http://maritimeinsurancebrokers.net/uploads/1/3/0/2/130272295/130272295.html#anjaana+anjaani+full+movie++dailymotion

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001317.bin
243b28c5481f60afb5e8c0df92239cd02f2ee91622b1487ee92e6f1b041eed18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1317 7972 bytes

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