Malicious PDF — malware analysis report

Static analysis result for SHA-256 5534d752418167e1…

MALICIOUS

PDF

40.4 KB Authoring application: Scribus
MD5: 70b80e7b8a35c76b982a2943d765518a SHA-1: a7e24d9726ee37900f41a6c1a3c67c1b99c706e9 SHA-256: 5534d752418167e132379cfd5e0c0f7fb414ba740fda6e37016e1b19f64cb89f
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm designed to distribute malicious content or phishing pages. The ClamAV detection further supports its malicious nature. The document body contains garbled text and some URLs, but no clear instructions or lures are discernible from the readable portions.

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://jolilunu.smartbitrix.ru/uploads/2020/01/28/adffc70bbaf639.pdf
    • http://mundofeliz.es/uploads/1/3/0/3/130323733/a7bed.pdf
    • http://rockyourdaybook.com/uploads/1/3/0/6/130620840/sojitisisosowan-parodupu-nepex-mipatiroje.pdf
    • https://gowenejenupo.weebly.com/uploads/1/3/0/5/130588272/getisomomazo.pdf
    • http://weva.graf-von-eichendorff.online/uploads/2020/01/28/1de8331ff596.pdf
    • http://abundantyoga.com.au/uploads/1/3/0/5/130588452/gigukesegitobo.pdf
    • http://audio-start34.icu/uploads/2020/01/28/nawozenipimozut-wigak.pdf
    • http://sexcrime.info/uploads/2020/01/27/dajefenavifo.pdf
    • http://lensphoto.com/uploads/1/3/0/6/130605164/denevutevo.pdf
    • http://vineyardsfarmexclusive.com/uploads/1/3/0/2/130270938/nekuxugamakaxiv.pdf
    • http://youngatartmn.com/uploads/1/3/0/6/130639364/tolopoxit_dijedomada_favurupimuwesix.pdf
    • http://cityonloc.com/uploads/1/3/0/6/130621369/130621369.html#meeting+agenda+format+email

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001367.bin
719db88f137b9506d86ef1eb3241336e45b7c2dfdadeed644e43b0eac29d9ffc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1367 8552 bytes

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