Malicious PDF — malware analysis report

Static analysis result for SHA-256 81bf3f08ba229395…

MALICIOUS

PDF

31.9 KB Authoring application: Poppler-utils
MD5: 4d99e9d603d715e5d80104296309471b SHA-1: a50a9f239ee4460c26f0af24d6101d9501229e3d SHA-256: 81bf3f08ba229395b587344bde53a202c57014acc66c322a5b3252aa4cc9eb5a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links to other PDF files hosted on various domains, indicating a link farm or redirection scheme. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic redirection intent. The embedded URLs are the primary indicators of compromise, likely leading to malicious content or further stages of an attack.

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://rockinroosdjservice.com/uploads/1/3/0/6/130621033/wavupirojofigapa.pdf
    • http://baretodo.difmed.com/uploads/2020/01/27/rojuz.pdf
    • http://fegefi.dedietrich-outlet.ru/uploads/2020/01/28/2062675.pdf
    • http://greencoconutmarketing.com/uploads/1/3/0/2/130287937/8862401.pdf
    • http://golufozox.qazaqkuresi.com/uploads/2020/01/29/978beb5aa0a.pdf
    • http://thedianavargas.com/uploads/1/3/0/4/130483146/2511127.pdf
    • https://tivipogux.weebly.com/uploads/1/3/0/5/130544413/dozakez-xekowuwenumagu-firedese.pdf
    • http://kopunaluvo.ekzolocin-ot-gribka.pro/uploads/2020/01/27/lajijaxifugogo.pdf
    • http://berryflats.net/uploads/1/3/0/5/130547999/d2a2e503.pdf
    • http://candeelandproductions.com/uploads/1/3/0/5/130540824/jobevenilikoputuse.pdf
    • http://gawem.myaccount-solution.net/uploads/2020/01/27/1d83b4ae9b.pdf
    • http://nodamineg.vitevendu.net/uploads/2020/01/27/d91a25d57f62.pdf
    • http://evokefitness.net/uploads/1/3/0/4/130435619/130435619.html#baixar+hack+whatsapp+ultra+v+1.5

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000014a7.bin
153dad7b538f403ced99a247f69d932c2e20ee2c5cbfc3d57c1b1b8c62915980		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14A7 7912 bytes

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