Malicious PDF — malware analysis report

Static analysis result for SHA-256 73667a1953c83f7d…

MALICIOUS

PDF

34.9 KB Authoring application: OpenOffice.org
MD5: 41211916765a8171fa726788a30270df SHA-1: 4d42c5492c39dae272ba675c6d95e80f11060dc0 SHA-256: 73667a1953c83f7d05652f721b123be4270261907a137a4bd89ebc55e9ec34c5
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a pattern identified as PDF_SEO_LINK_FARM. This suggests a tactic to drive traffic to potentially malicious or spam-related content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or redirecting users to harmful sites.

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://mygetfitkitchen.com/uploads/1/3/0/2/130272979/vusevepugagir.pdf
    • http://tank-insurance.com/uploads/1/3/0/6/130603873/mevesez-pojusesaj.pdf
    • http://allsaintsws.net/uploads/1/3/0/2/130272481/6491203.pdf
    • http://be5k.org/uploads/1/3/0/6/130604281/454eb59974.pdf
    • http://brian-amos.com/uploads/1/3/0/2/130272905/9594331.pdf
    • http://monarchlax.com/uploads/1/3/0/5/130540352/5547379.pdf
    • http://nagi.sledcomproc-kuzbass.ru/uploads/2020/01/29/vizeni_newajirutijel.pdf
    • http://metallicblackrecords.com/uploads/1/3/0/2/130288392/5386882.pdf
    • http://mysoundcollective.com/uploads/1/3/0/7/130739247/130739247.html#kenneka+jenkins+official+autopsy+report

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001185.bin
453dddcef4ced59689443028b3824e1da49f537728e5c20f7cd28c2309342833		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1185 8172 bytes

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