Malicious PDF — malware analysis report

Static analysis result for SHA-256 a272bf0e7b32b745…

MALICIOUS

PDF

43.4 KB Authoring application: Pdftk
MD5: 651688c9ed92f8a95b1048331ce46910 SHA-1: 03545f1bceb637d4d621db5205ce0e47ef3265ee SHA-256: a272bf0e7b32b745cd2ea8392fde8833ce9da8f99a7a9c8c64bd076fbe972580
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded external links, a technique commonly used for SEO poisoning or phishing. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent, likely related to traffic redirection or phishing campaigns. No scripts were extracted from this sample.

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://advancedspeedtechnologies.com/uploads/1/3/0/4/130476976/5d2d7610a.pdf
    • http://showboxapkdownload.info/uploads/1/3/0/2/130289700/3151986.pdf
    • http://perthcards.com/uploads/1/3/0/4/130488157/6759946.pdf
    • http://cognitiverehabilitation.org/uploads/1/3/0/6/130620327/198916eb043ef9e.pdf
    • http://appraiseradvance.com/uploads/1/3/0/5/130551127/8e6aaf7b.pdf
    • http://askwynnie.com/uploads/1/3/0/2/130272478/9190158.pdf
    • http://nabhthefam.com/uploads/1/3/0/4/130436180/jiwifeku-bukelonogajul.pdf
    • http://lisastory.space/uploads/1/3/0/4/130488223/xokukoxoduvapagogase.pdf
    • http://frnkjmz.com/uploads/1/3/0/2/130288768/sulurobozewar.pdf
    • http://moveonidiomes.com/uploads/1/3/0/7/130740368/241ee0.pdf
    • http://mikescottthomson.com/uploads/1/3/0/5/130547405/7676308.pdf
    • http://nationalfootballcheerleadersalumni.org/uploads/1/3/0/7/130775728/130775728.html#oscar+awards+2017+best+picture

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012de.bin
07ce5765bf62c0bd271aa439e49d7f195704aa53d98ca6ed6e373368abe481d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12DE 8544 bytes
font_01_sfnt_off000061a1.bin
c7143368894299a997ed09f05024df052d964886bc902d598de4a6791c50751f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61A1 10292 bytes

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