Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ce9a1012ddb6450…

MALICIOUS

PDF

52.0 KB Authoring application: Adobe PDF Library 9.0
MD5: aa846da64e49ec4202ac4b661cadca99 SHA-1: c374c7eee450b5b14b61b4efae32e0b41e471332 SHA-256: 2ce9a1012ddb64500e205b97ad48e94f0fb2e6e9b34dffc0d3077ba2cf30cf2d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for Pdf.Phishing.TtraffRobotInstall-7605656-0 and an ML classifier indicating high maliciousness. The primary attack pattern observed is a link farm containing numerous external URLs pointing to other PDF files, a common technique for SEO manipulation or distributing further malicious content. 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://phapapp.net/uploads/1/3/0/6/130640197/robazivoxezoguzural.pdf
    • http://blvd420.com/uploads/1/3/0/7/130740222/pulemulenotevu.pdf
    • http://mysss.ca/uploads/1/3/0/2/130289597/jotadinikupud-koxeje-nofikunakajado.pdf
    • http://cancercoloring.com/uploads/1/3/0/6/130604903/mivuparejoner.pdf
    • http://mentorgeek.net/uploads/1/3/0/6/130621431/zazasumibez.pdf
    • http://dexoclothing.com/uploads/1/3/0/2/130288321/e787bbbfc47d.pdf
    • http://northparkvoicestudio.com/uploads/1/3/0/3/130379353/nakug-lupodunil-ninopoledeto.pdf
    • http://plussizebridaldressesnh.com/uploads/1/3/0/6/130620278/tejexize.pdf
    • http://north-shore-aerial-imaging.com/uploads/1/3/0/4/130490808/tabofibud.pdf
    • http://carpetcleancary.com/uploads/1/3/0/5/130539344/130539344.html#interview+with+the+devil+pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001259.bin
b45d9b91546a329be1464b0f2fd9d37bc41680b2ff6876eb5425b5ad1512fb68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1259 8520 bytes
font_01_sfnt_off000084cb.bin
5d7ebd720715cd86529581f1d40cc643f68465477bd430d4be5ff736bc95f798		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84CB 16268 bytes

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