Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfa56b810a16ac4e…

MALICIOUS

PDF

37.0 KB Authoring application: Adobe PDF Library 9.0
MD5: 1c54e0ff3b575300ab7c47820f2b4f90 SHA-1: f5c77ccab535351991f049258fcbaa9045911d98 SHA-256: dfa56b810a16ac4e31910b6f1210aead0bac26d435eb7a5331a43fd93d90856d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a phishing or malicious redirection campaign. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports this. The ML classifier also strongly indicated maliciousness. The document body was heavily obfuscated and unreadable, preventing a more detailed analysis of its specific lure.

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://badlydrawnmonkeyent.com/uploads/1/3/0/3/130313507/f8c06d0b14.pdf
    • http://ukrehabadvice.com/uploads/1/3/0/4/130476313/f28e5980fed0481.pdf
    • http://misemeli.com/uploads/1/3/0/5/130589277/210a2c793871b.pdf
    • http://www.fardadsabetpour.com/uploads/1/3/0/8/130874300/3865193.pdf
    • http://restage.tv/uploads/1/3/0/4/130435803/7eda5f45a.pdf
    • http://www.childrensliteratureassembly.com/uploads/1/3/0/2/130288551/2620297.pdf
    • http://chatthillscommunity.com/uploads/1/3/0/2/130289238/momokuwakoso_lidixiso_samatujo_sixit.pdf
    • http://acts2035.online/uploads/1/3/0/2/130271195/756120.pdf
    • http://millennial-media.net/uploads/1/3/0/2/130288486/3133285.pdf
    • http://colespressureplus.com/uploads/1/3/0/5/130539583/f2aac.pdf
    • http://missinglinkarchives.com/uploads/1/3/0/3/130323755/54f76afc728d0.pdf
    • http://yourstoryof.com/uploads/1/3/0/5/130588230/fuforetap-lubowo-gexuguxijarano.pdf
    • http://room2dream.net/uploads/1/3/0/2/130289417/6329210.pdf
    • http://seedtoatree.com/uploads/1/3/0/5/130550792/32e5829fec7757d.pdf
    • http://boutiqueofisanti.com/uploads/1/3/0/8/130813982/rukamokovomosawulusu.pdf
    • http://lynnmmelfi.com/uploads/1/3/0/5/130539726/ximamupekuwitoj.pdf
    • http://51j6tc.bdgct.com/uploads/1/3/0/7/130775292/130775292.html#cohen+diet+blood+type+o+meal+plan
    • http://www.childrensliteratureassembly.com/uploads/1/3/0/2/130288551/262029

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033d3.bin
e8b4ab55af518ef005023252ff9591ff833462d015999bee09e63a48c5db65b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33D3 8288 bytes

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