Malicious PDF — malware analysis report

Static analysis result for SHA-256 088cab73202ae091…

MALICIOUS

PDF

32.8 KB Authoring application: LibreOffice
MD5: 26763c6d3e4efe0579f50a2d85b4bf68 SHA-1: faf70b4206a6af567b547f43b52358d254154cf4 SHA-256: 088cab73202ae09140d12bb95c9b4cf2344ea37071db757f982bc091098f232c
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it acts as a lure, likely to download further malicious content or to engage in phishing activities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://penncrossknoll.com/uploads/1/3/0/3/130379597/wugaselamire_kawevijifomagu.pdf
    • http://kcgweb.com/uploads/1/3/0/4/130483346/rizis.pdf
    • http://applinglakesfinancing.com/uploads/1/3/0/5/130545360/fejoxusixiferi.pdf
    • http://kupekabof.best-shop21.ru/uploads/2020/01/29/5445176.pdf
    • http://newdaymakers.org/uploads/1/3/0/5/130550986/mabizu.pdf
    • http://catv47.com/uploads/1/3/0/2/130289563/razetifitidam-nuzanigixamulew.pdf
    • http://datingwithdaniella.com/uploads/1/3/0/2/130289583/goluwenuzabozude.pdf
    • http://beaniesshoerepair.com/uploads/1/3/0/3/130313345/tosibup_lawutibipinabaw_fopidemogemof.pdf
    • http://reboundat.com/uploads/1/3/0/2/130289580/130289580.html#mamma+mia+in+swedish+lyrics

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001221.bin
bbc7ee4dfaa3f9142056df3d0cb36e426d9f21a39244e2dda1fc6ac84afb0a67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1221 9188 bytes

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