Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cfd4253dd18d380…

MALICIOUS

PDF

43.1 KB Authoring application: pstoedit
MD5: e8687fcb777cbb3fa7491e27691e9c7b SHA-1: f0e635a455fcc2039030a46aac9243518e90f4db SHA-256: 3cfd4253dd18d380b49a0ae25d0233cccce3eb88c4fb1627fc9ef317e4ea9316
152 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics, including ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and a PDF link farm heuristic. The document body contains numerous embedded URLs pointing to PDF files hosted on various domains, suggesting a phishing or malware distribution campaign. The primary intent appears to be directing users to external, potentially malicious, content.

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://minamohit.com/uploads/1/3/0/5/130543305/ziwisuvuzipewe.pdf
    • http://mrsindler.com/uploads/1/3/0/6/130620959/levujevolekuj.pdf
    • http://jobcentreguide.net/uploads/1/3/0/4/130483266/ripija-zidovanev.pdf
    • http://cyclorise.co.uk/uploads/1/3/0/4/130483583/fiwipodinunafoj-bumamafubome.pdf
    • http://cheytownlady.com/uploads/1/3/0/5/130590672/370a4b4b8bfce2.pdf
    • http://dfgtwo.com/uploads/1/3/0/4/130476738/tetigojojem.pdf
    • https://vigubepunufebas.weebly.com/uploads/1/3/0/5/130588716/fofijar_zolarir.pdf
    • http://besthairreplacementnc.com/uploads/1/3/0/7/130739016/riwunuz-rirugi-gifegobanene-ganonudiz.pdf
    • http://freelas.net/uploads/1/3/0/4/130435666/808be30f02b6ac.pdf
    • http://micro-datanet.net/uploads/1/3/0/6/130604203/5057931.pdf
    • http://ofnol.com/uploads/1/3/0/2/130287513/5095477.pdf
    • http://ardsleylatin.org/uploads/1/3/0/6/130639298/gexaf-nugudo.pdf
    • http://mindforyou.org/uploads/1/3/0/2/130288775/130288775.html#application+design+document+template

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012f2.bin
20e01f858b4314c6c04f2f273df83adc4f08fb3b5c412725ab347dfe7b83c3d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F2 8004 bytes

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