Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0766463f4989de6…

MALICIOUS

PDF

47.5 KB Authoring application: Pdftk
MD5: 40b62c096f342d612af046ff2980d59f SHA-1: 28c7b34ea958a0fc49c5e0b829e05154327e4caa SHA-256: b0766463f4989de67665ee521e36a5e667f4bbc81f865792e5e56c0abcbb3e38
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link

The PDF file contains a large number of embedded links to external PDF documents, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent. The document body itself is heavily obfuscated but contains references to IELTS essay vocabulary, suggesting a lure for students or individuals interested in language learning.

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://openskydigitalmarketing.com/uploads/1/3/0/2/130287536/migazulisag_tirililelu.pdf
    • http://ozarknaturalpaneling.com/uploads/1/3/0/6/130604476/viwidezo.pdf
    • http://roguecosmetique.shop/uploads/1/3/0/5/130590051/pekopudorax.pdf
    • http://alexbrightphotography.com/uploads/1/3/0/6/130621555/abc27cb5e7.pdf
    • http://mzansinewsonline.com/uploads/1/3/0/2/130289460/pudizune-waroliselokoba-lovame.pdf
    • http://macchiaphotography.net/uploads/1/3/0/7/130740175/mebigekofa-jujafute.pdf
    • http://dalestanford.com/uploads/1/3/0/3/130313149/nazago.pdf
    • http://monsieurbidule.com/uploads/1/3/0/6/130620646/timepazer.pdf
    • http://radiantlove.com/uploads/1/3/0/2/130271185/cb4957c776c0.pdf
    • http://vugewi.hobbyelectronika.ru/uploads/2020/01/28/jepivefonakawim_xejoze_fefova_bepetimelofas.pdf
    • http://theelfbox.com/uploads/1/3/0/7/130739540/130739540.html#ielts+essay+vocabulary+on+health

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012da.bin
9d8807b916895422bff2ed6c73d0bb5267d375500d87eff75df6d9a57307f7c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12DA 8224 bytes

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