Malicious PDF — malware analysis report

Static analysis result for SHA-256 078a1339a9a15477…

MALICIOUS

PDF

37.5 KB Authoring application: Mobipocket Creator
MD5: 1c16fb0511342c8a823df8fb376b0e69 SHA-1: 8e600683747fc1ab025fc8d8aaa0d19a32e3bca5 SHA-256: 078a1339a9a1547744aaba77bd1755e6348c6fe2c427edd865795f3d8116c2f1
160 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files, indicating a link farm designed to distribute malicious content. The presence of a 'download button' heuristic further suggests a phishing or scam attempt. ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall' reinforces the malicious nature of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://lagu.tehnika-ask.ru/uploads/2020/01/28/624295.pdf
    • https://radoxavete.weebly.com/uploads/1/3/0/4/130483519/6370863.pdf
    • https://purazunatasuga.weebly.com/uploads/1/3/0/3/130379391/rewakijet.pdf
    • http://americanonesie.com/uploads/1/3/0/3/130313188/d23b34a2c918.pdf
    • http://melanatedandproud.com/uploads/1/3/0/6/130604806/jowotix_wutinevitevat_wolekikorixuli_vidotubexo.pdf
    • https://wanigunibome.weebly.com/uploads/1/3/0/5/130588799/9d5b6e1b26c7f9.pdf
    • http://blackbox3dprinting.com/uploads/1/3/0/4/130476054/regoxufulaledajar.pdf
    • https://niferuxogut.weebly.com/uploads/1/3/0/2/130289429/9854101.pdf
    • http://ciggysound.com/uploads/1/3/0/6/130621969/130621969.html#teoria+del+todo+ifotonica+pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012a9.bin
bc07c2ecf2afa1922be2bfd3be4f7b996e4319dac6d324ae93c984bb44bf183c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A9 10228 bytes
font_01_sfnt_off0000576c.bin
f4ce3028a125c5b8bed9d309d3544af6a6d60d4e3797640d4785d640f86d1e61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x576C 1860 bytes

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