Malicious PDF — malware analysis report

Static analysis result for SHA-256 b31f3392024af92a…

MALICIOUS

PDF

50.1 KB Authoring application: QPDF
MD5: 89aee480060119254e41aa8d699428ad SHA-1: c84516022c4cb8ffc66ba7cae3792cccab883eb1 SHA-256: b31f3392024af92abb9e07702a74d93e95e696232b7d29b619958e07204e144f
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious distribution intent. While no scripts were extracted, the sheer volume of external links suggests a campaign to drive traffic or deliver further payloads.

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://vegasyote.weebly.com/uploads/1/3/0/5/130588842/5285029.pdf
    • http://odempsey.net/uploads/1/3/0/5/130551880/7699111.pdf
    • http://morganrv.com/uploads/1/3/0/2/130289792/da6264f3f1982ea.pdf
    • http://napolka174.ru/uploads/2020/01/28/zefotiwujifekulin.pdf
    • http://wexoges.firstcommonsense.com/uploads/2020/01/29/00f1177f7.pdf
    • http://principalgneely.com/uploads/1/3/0/2/130287553/3160535.pdf
    • http://amommachoosingjoy.com/uploads/1/3/0/2/130271095/wazufetunebom.pdf
    • http://saigonapartmentcenter.com/uploads/1/3/0/5/130542909/vipop_luxosuno.pdf
    • https://fenodunow.weebly.com/uploads/1/3/0/4/130476574/35a63541a.pdf
    • http://bangkokkettlebells.com/uploads/1/3/0/4/130435753/3540024.pdf
    • http://fillzenpillows.com/uploads/1/3/0/5/130551140/xijamimas.pdf
    • http://miss-diva.com/uploads/1/3/0/4/130489001/7222365.pdf
    • http://tindi-lewis.net/uploads/1/3/0/2/130288571/jalexavixixarufidagu.pdf
    • http://whitesflooring.com/uploads/1/3/0/4/130488158/34acdcf.pdf
    • http://zamu.1000bitcoinhomepage.com/uploads/2020/01/28/acfc07c9.pdf
    • http://cyclebavaria.com/uploads/1/3/0/5/130539125/130539125.html#fornos+de+calor+envolvente+a+g%C3%A1s+mas

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000162b.bin
f3deebef37c3f9f30fae2c9cf879ba7096db63b4486847f6219953b370216973		 pdf-font-stream PDF embedded font (sfnt) at offset 0x162B 11180 bytes
font_01_sfnt_off00007c97.bin
be0b8eae024d21468f129d5632cc3184d79f917f5aca72c5c50e9ca81bf4962c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C97 16392 bytes

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