Malicious PDF — malware analysis report

Static analysis result for SHA-256 51b4b9e89cf463b6…

MALICIOUS

PDF

41.9 KB Authoring application: Poppler-utils
MD5: 635b4727a83f810caa0bfb71ae706f64 SHA-1: 72c629a49007adc38e96534b1896d318c778222c SHA-256: 51b4b9e89cf463b619f4388fab61089841f294868d81c38480e7e8008c615362
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or SEO spam campaign. The ClamAV detection further confirms its malicious nature. The embedded URLs are the primary indicators of malicious activity, likely serving as a distribution mechanism for further content or malware.

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.Dropper.Agent-8001762-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8001762-0
  • 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://nanogun.tvpays.ru/uploads/2020/01/29/rakurumig.pdf
    • http://1001brushstrokes.com/uploads/1/3/0/5/130538866/2834401.pdf
    • http://gurap.trends2019.shop/uploads/2020/01/29/xovudefabulas.pdf
    • http://gor.feierverkspb.ru/uploads/2020/01/28/9c1610840c.pdf
    • http://wiru.armion.tech/uploads/2020/01/28/5741232.pdf
    • http://marusyatour.ru/uploads/2020/01/28/4998495.pdf
    • http://aeroagt.com/uploads/1/3/0/4/130476671/918836a.pdf
    • http://wut.loza.pro/uploads/2020/01/29/vilevogegemu-sabevukutinuni-femopomom.pdf
    • http://ya-solutions.com/uploads/1/3/0/5/130545557/7482907.pdf
    • http://xogarin.rectaparrew.com/uploads/2020/01/27/8590593c624466b.pdf
    • http://bano.altaigrand.com/uploads/2020/01/28/93943a783e683f7.pdf
    • https://lajegululeni.weebly.com/uploads/1/3/0/5/130588195/8bbb93929bf.pdf
    • http://koffeestains.com/uploads/1/3/0/6/130620581/c6686df86a220.pdf
    • http://norcal-cre.com/uploads/1/3/0/2/130289587/silunegom.pdf
    • https://fijupesadel.weebly.com/uploads/1/3/0/4/130476014/pelifawizu.pdf
    • http://andreahart.net/uploads/1/3/0/3/130313262/kepazaxaran.pdf
    • http://reverane.wizzi.ru/uploads/2020/01/28/9526656.pdf
    • http://weallloverice.com/uploads/1/3/0/6/130621363/ninumedimer.pdf
    • http://stefaniefletcher.com/uploads/1/3/0/5/130588718/fapiz.pdf
    • http://sivuludeba.fuck4me.top/uploads/2020/01/28/1977057.pdf
    • http://zujarawija.ecpn.su/uploads/2020/01/27/4927812.pdf
    • http://xogepe.remsokna.ru/uploads/2020/01/28/b059521a5d1.pdf
    • http://mojiforu.kreditop.ru/uploads/2020/01/27/larujisudobu-zaxusebofud-metabukonodav-zenuvafegefij.pdf
    • http://loweslake.com/uploads/1/3/0/6/130603932/130603932.html#save+my+marriage+today+book

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000166f.bin
3c89644bcfc6833950140f330bc956535a83c9774818c19ab0f26a6d6f83b114		 pdf-font-stream PDF embedded font (sfnt) at offset 0x166F 8668 bytes

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