Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f958023c0e593c1…

MALICIOUS

PDF

39.1 KB Authoring application: PDF Studio
MD5: f5f2492b007a4aadbf5d026d31f8a842 SHA-1: 83fbc90dbd81147951841d9f1098bea42c6ac51d SHA-256: 5f958023c0e593c160b99bef93109dbb2e81bf4ae0ebbbe91ba477b76ad60314
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a coordinated effort to distribute content or manipulate search engine results. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

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://jixiangfangzhenrenniuniu.jhamrick.com/uploads/1/3/0/5/130588214/vomotabobimusukupose.pdf
    • http://oakmountainfirewood.com/uploads/1/3/0/3/130313289/046d5964a.pdf
    • http://hawthorneblossoms.com/uploads/1/3/0/7/130739026/kifodidexalol_wexeb_faridomabuti.pdf
    • http://camidogtraining.com/uploads/1/3/0/4/130436080/beaf27c1c9c.pdf
    • http://redgumestate.com.au/uploads/1/3/0/4/130488513/joledogu.pdf
    • http://paulsmusicacademy.com/uploads/1/3/0/5/130588277/reripelolapamuratole.pdf
    • http://nicolexing.com/uploads/1/3/0/9/130969653/sojubamab.pdf
    • http://g10z.com/uploads/1/3/0/6/130639884/guwetekugapususozala.pdf
    • http://carbonproductions.co.uk/uploads/1/3/0/7/130776898/8450820.pdf
    • http://cocksplosion.com/uploads/1/3/0/8/130815093/186609b2dfc.pdf
    • http://captreefishingboat.com/uploads/1/3/0/6/130621390/xebakexop.pdf
    • http://brownsburgcarwash.com/uploads/1/3/0/7/130775772/ziribe-fugafarewuja-simitoma-tetevesax.pdf
    • http://senangelis.com/uploads/1/3/0/5/130539926/konebaso.pdf
    • http://kuniusedcars.com/uploads/1/3/0/7/130775992/68ed8.pdf
    • http://gfx.directory/uploads/1/3/0/2/130270882/rivosudugafekipotik.pdf
    • http://deventermanueletherapie.nl/uploads/1/3/0/7/130739539/2488323.pdf
    • http://littlerevelend.com/uploads/1/3/0/8/130874580/vazajotedefe-dudulisiwasupi.pdf
    • http://atlanta-craft.best/uploads/1/3/0/5/130588395/garobinonavoxiri.pdf
    • http://updentity.fhfh.org/uploads/1/3/0/2/130274024/6161c2f246e78c.pdf
    • http://castlemusicroom.com/uploads/1/3/0/2/130289515/aa43695b9.pdf
    • http://nativeamericanfluteshop.com/uploads/1/3/0/6/130604739/kasutavas.pdf
    • http://host115.carmichaelnl.com/uploads/1/3/0/3/130379523/130379523.html#conversion+chart+blood+sugar+to+a1c

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000354a.bin
361f7f1f513d70edf8a3ab6af9f81c50e126fdfa4c981c85eda61fd380a6ece5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x354A 8856 bytes

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