Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc381fd484e66b41…

MALICIOUS

PDF

43.0 KB Authoring application: Soda PDF
MD5: dc3c7e5736f73462f025b18e155cb65e SHA-1: 432aff80ee16cccc854b15f30285461977fccf9d SHA-256: fc381fd484e66b41b332dbb4371e80de32a9eae287a052002df8321cf2639b61
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, as detected by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or redirection scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution through these external resources. No scripts were extracted from this sample.

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://mtgcustomcards.com/uploads/1/3/0/2/130287537/zawusonamepanetun.pdf
    • http://keppingerlaw.com/uploads/1/3/0/4/130435844/vodus-putefawaru.pdf
    • http://mystudio500-woodfiredpottery.com/uploads/1/3/0/4/130478935/6770752.pdf
    • http://vizualpost.net/uploads/1/3/0/6/130604111/8986881.pdf
    • http://diminexnz.com/uploads/1/3/0/6/130621383/fadowejedivaser.pdf
    • http://runsquadopo.org/uploads/1/3/0/5/130543995/lodorin.pdf
    • http://sethgangwer.com/uploads/1/3/0/6/130603884/mojukubibikagaz_popawapebe_borerunelafo.pdf
    • http://placitasdemocratsandfriends.com/uploads/1/3/0/4/130488331/839eeb2.pdf
    • http://antiviruseprotectserviceonline.site/uploads/1/3/0/3/130312920/130312920.html#boi+keycode+app

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001333.bin
98a4550fb1ffe89fe69d4f5a34120e2f15e03bc58b5639253e04f50ee5af6e46
pdf-font-stream PDF embedded font (sfnt) at offset 0x1333 8736 bytes
font_01_sfnt_off00006226.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63
pdf-font-stream PDF embedded font (sfnt) at offset 0x6226 16036 bytes