Malicious PDF — malware analysis report

Static analysis result for SHA-256 942563f930f872de…

MALICIOUS

PDF

82.6 KB Authoring application: QPDF
MD5: ace68ad97b4f285f1a9c8f84938b8f6d SHA-1: f3ca44d4ea97ffe6dfb93285dc22697de72f8949 SHA-256: 942563f930f872de8e087215c685f59d0a02772ba4cc78f9f4d5f266828c53a2
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics, including ClamAV and an ML classifier, for being malicious. It contains a large number of external links, indicating a link farm designed to redirect users. The embedded URLs point to various domains, suggesting a broad distribution network for potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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://birminghamconcreteremoval.com/uploads/1/3/0/7/130739887/d7453256f98efa.pdf
    • http://bikoz.slimtelo.pw/uploads/2020/01/28/ea782a016.pdf
    • http://tanjoy.net/uploads/1/3/0/7/130776042/kexaxer.pdf
    • http://musehb.com/uploads/1/3/0/2/130274269/fugiwafawo.pdf
    • http://readytoadopt.ca/uploads/1/3/0/6/130639865/1527419.pdf
    • http://my-zero-stress.com/uploads/1/3/0/2/130271099/617a13.pdf
    • http://mynaturalhairspa.com/uploads/1/3/0/3/130313166/130313166.html#ccid+consulting+co+ltd+annual+report

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000723e.bin
361c54cb242af353124b8d231f964b60464ecc9b9783c67c85b39f2c8601f76a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x723E 55928 bytes
font_00_sfnt_off000012a9.bin
96c6f992ae22afbb01d9fb9bec5cbf98b169aeb78125a0a53a2bb7d1ace90f3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A9 9272 bytes

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