Malicious PDF — malware analysis report

Static analysis result for SHA-256 18b46ca79e49bcae…

MALICIOUS

PDF

37.0 KB Authoring application: OpenOffice.org
MD5: 74fa0c7bd3592f96156eec770311f6bf SHA-1: 86b619f3ef82c91cb37c1fcdf18d65cefd53d3b5 SHA-256: 18b46ca79e49bcae5477dc9e833baf847078dae5bbbe6e0316ea90fab301b16c
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical rule for a large external PDF link farm and a ClamAV detection for 'Pdf.Phishing.TtraffRobotInstall'. The embedded URLs point to numerous PDF files hosted on unrelated domains, suggesting a tactic to distribute malicious content or manipulate search engine results. No scripts were extracted from this sample, and the document body contained mostly obfuscated or corrupted text.

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://hostmaster.pipart.com.au/uploads/1/3/0/5/130546244/2a9780e4427.pdf
    • http://boutiqueaubelumiere.com/uploads/1/3/0/4/130435673/zepita.pdf
    • http://autodiscover.briggsquarterhorses.com/uploads/1/3/0/9/130968921/suluzurofisak_jeduvego_rufobevikaxema.pdf
    • http://ballerweekly.com/uploads/1/3/0/5/130543685/3573323.pdf
    • http://agentrh.com/uploads/1/3/0/7/130775879/6785328.pdf
    • http://acloudsolutionsarchitect.com/uploads/1/3/0/7/130740590/masugiteduwivazojug.pdf
    • http://kmdmoney.com/uploads/1/3/0/3/130379098/wizebexibigabebowi.pdf
    • http://obrothersdetailing.com/uploads/1/3/0/6/130603884/5c3601d397.pdf
    • http://tmsmllc.com/uploads/1/3/0/8/130814345/1319047.pdf
    • http://metzrwesleyan.com/uploads/1/3/0/5/130544437/bitijajiminevoji.pdf
    • http://sarahstrasser.org/uploads/1/3/0/6/130621665/kimefaj.pdf
    • http://www.chazstyles.com/uploads/1/3/0/3/130379274/2876406.pdf
    • http://oleanderpress.co.uk/uploads/1/3/0/5/130588565/lifabima.pdf
    • http://blairkhartman.com/uploads/1/3/0/6/130604386/0e53c5a170d0.pdf
    • http://backes-olli.com/uploads/1/3/0/5/130588261/pilugurofavo.pdf
    • http://babywhoopsie.com/uploads/1/3/0/6/130620897/limubo-nebitewetonuf.pdf
    • http://aicphr.org/uploads/1/3/0/6/130639856/417633.pdf
    • http://plr4.us/uploads/1/3/0/5/130543837/mobix.pdf
    • http://exfdainspector.com/uploads/1/3/0/2/130272636/dezatixapeliket.pdf
    • http://myholisticskinclinic.com/uploads/1/3/0/6/130603822/vimux_dabawuwuxal.pdf
    • http://wcd-4k4esn.mgh-r.ch/uploads/1/3/0/6/130639765/130639765.html#hip+abductor+exercises+knee+pain

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031d4.bin
fa15d7c1bdc4a1dfe071b782f055aba036cd64dca5d0cfd01ff79f471002da76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31D4 7728 bytes

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