Malicious PDF — malware analysis report

Static analysis result for SHA-256 f103683a1cd290fb…

MALICIOUS

PDF

37.4 KB Authoring application: GIMP
MD5: 00c3e461bf11950813935d3f2987b6a5 SHA-1: 1a3c6c27a496196a71a8b5190f2659b2aa5dcdb4 SHA-256: f103683a1cd290fb1c31d51532ab214195a0708874bd6198c9cd53b16d64d12c
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection tactic. The document body, though partially corrupted, mentions 'Canadian visa application form online', indicating a phishing or social engineering lure. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall' further supports a phishing campaign. 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://drdiagnostico.com/uploads/1/3/0/4/130476642/05c8f9b4723.pdf
    • http://brian-amos.com/uploads/1/3/0/6/130604583/rujebitemobobixupex.pdf
    • http://cbaptistmurillo.com/uploads/1/3/0/4/130476385/60a24ad5f7.pdf
    • http://rebooting.org/uploads/1/3/0/6/130620549/timiv.pdf
    • http://louiseneaveportfolio.com/uploads/1/3/0/2/130272979/0354fef0c.pdf
    • http://birdhousepdx.com/uploads/1/3/0/4/130484005/lojexuwitotiji.pdf
    • http://aharesidents.com/uploads/1/3/0/4/130483510/8417674.pdf
    • http://nupelicanparty.org/uploads/1/3/0/6/130604446/130604446.html#canadian+visa+application+form+online

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010e4.bin
536dca4daecf92be18cb055bc935b811f1112a92b3b50b25e93880490a443b2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E4 7784 bytes

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