Malicious PDF — malware analysis report

Static analysis result for SHA-256 954df79f01a76d75…

MALICIOUS

PDF

46.7 KB Authoring application: Smallpdf Desktop
MD5: d9f6b90f5d328ce6f85027d6182290ad SHA-1: e36dcdc3eacf68e8143e4ab01b23a9a4bc2848f4 SHA-256: 954df79f01a76d755505a3aabc301f2f5aef26fcb09cc558344f29449d66963a
150 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics, including a critical finding for a large number of external links (PDF_SEO_LINK_FARM) and ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0. The embedded URLs are likely part of a phishing campaign or a link farm designed to distribute malware. No scripts were extracted from this sample, but the extensive link farm suggests a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://naimahusseini.de/uploads/1/3/0/5/130590431/2738021.pdf
    • http://booksigningsusa.com/uploads/1/3/0/5/130588230/dojewojijok.pdf
    • http://birdiesbakeryok.com/uploads/1/3/0/5/130590462/1eb13697.pdf
    • http://newlifefitz.org/uploads/1/3/0/7/130739490/3133548.pdf
    • http://bangkokkettlebells.com/uploads/1/3/0/7/130775878/mutakomupulabopis.pdf
    • http://kristinw.com/uploads/1/3/0/6/130620407/fokex.pdf
    • http://141592.info/uploads/1/3/0/5/130539497/2be153958a95e6.pdf
    • http://lurious.com/uploads/1/3/0/2/130291492/turafovijepa-diwaletifewijol.pdf
    • http://effectiveinfotech.com/uploads/1/3/0/5/130547024/1874525.pdf
    • http://graceannfallon.com/uploads/1/3/0/4/130490378/9164653.pdf
    • http://www.where-is-melanie.com/uploads/1/3/0/2/130272649/fc33f671.pdf
    • http://jeremyandkristina.com/uploads/1/3/0/5/130543289/vezasojebuxit.pdf
    • http://benplattes.net/uploads/1/3/0/7/130739185/8872425.pdf
    • http://f4a2b2.bdgct.com/uploads/1/3/0/4/130436171/130436171.html#safety+management+system+aviation+jobs
    • http://booksigningsusa.com/uploads/1/3

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059c9.bin
a5cb8cde35d8b0d3c13f772cacb241be3d88d80296c8dd6b7446736325592180		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59C9 9640 bytes

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