Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c0c8b1e9a1dba1e…

MALICIOUS

PDF

31.4 KB Authoring application: Poppler-utils
MD5: 41dabc847223057fa18e1849056df3d9 SHA-1: b69b415c63a909fe77df7fec6b2d57f9e7b5469b SHA-256: 5c0c8b1e9a1dba1e9f66b72c1f6438c728b7b532d0e181b42f7b9ed9b6c81b6d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, many of which point to other PDF files, indicating a link farm designed to distribute malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. The embedded URLs are the primary indicators of compromise, suggesting a campaign to redirect users to further malicious sites.

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://clarionbobcatfootball.com/uploads/1/3/0/6/130639173/8e0703285.pdf
    • http://gaji.dda-russia.com/uploads/2020/01/28/salenolizuxorunibil.pdf
    • http://bhbl-lionsproject.org/uploads/1/3/0/4/130435905/xurob.pdf
    • http://cncsnab.ru/uploads/2020/01/28/ratowivoza-rodoxoz-fepogitego-wosupoji.pdf
    • http://bebikib.bangojango.me/uploads/2020/01/27/7333259.pdf
    • https://pepemonob.weebly.com/uploads/1/3/0/5/130543158/pukufug.pdf
    • https://joxabazebuzika.weebly.com/uploads/1/3/0/5/130545365/rozedivi.pdf
    • http://wowartz.com/uploads/1/3/0/6/130605016/08ebbf9.pdf
    • https://fuvenunepavil.weebly.com/uploads/1/3/0/2/130271072/rajiz.pdf
    • http://sandyhookmachineshop.net/uploads/1/3/0/4/130483236/losij.pdf
    • http://actorheadshotphoto.com/uploads/1/3/0/6/130622005/9124994.pdf
    • http://maxvanderree.com/uploads/1/3/0/3/130379169/nilegelola-wibonuzi.pdf
    • http://valkrystore.org/uploads/1/3/0/4/130435574/6692631.pdf
    • http://ptk-soyuz.com/uploads/2020/01/27/vurixozok-japabafagowojap-puwevo.pdf
    • http://gar.fashionmoney.online/uploads/2020/01/29/ca8b3d9ec.pdf
    • http://zod.muaxehoigiatot.com/uploads/2020/01/28/9b0d2e8e4b986.pdf
    • http://amusee.fr/uploads/1/3/0/6/130621201/130621201.html#centrifugal+compressor+maintenance+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001434.bin
aedf6b26d6d7691db32f74e97df60669ea677943c050fd03cb18f8a11b94f7a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1434 7632 bytes

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