Malicious PDF — malware analysis report

Static analysis result for SHA-256 c25ae8dc219901ee…

MALICIOUS

PDF

34.6 KB Authoring application: PDF Studio First seen: 2020-09-07
MD5: ed7dcd62b2fe2ad09e3e6b8a55a4a603 SHA-1: c8f6aa8592069d0254fbad34f4a3dee100466cf2 SHA-256: c25ae8dc219901eef8107a2feb61335afd481a29a5817207bc2a0d72887a65b1
160 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to other PDF files, disguised as an invoice template. This indicates a link farm or redirection strategy to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the phishing and traffic redirection intent. The primary goal appears to be directing users to download and potentially execute further malicious payloads from the numerous external URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://fibromyalgiamadesimple.com/uploads/1/3/0/5/130543569/mupalekelibarudux.pdf In PDF document text
    • http://randiandmike.com/uploads/1/3/0/3/130323789/5c681d877cdd0.pdfIn PDF document text
    • http://zadevolex.atrilmedia.com/uploads/2020/01/28/vulagotu-xutopepisa-wagiwaxi.pdfIn PDF document text
    • http://creditcoaches.org/uploads/1/3/0/4/130483207/1231505.pdfIn PDF document text
    • http://photolenka.com/uploads/1/3/0/4/130488105/8644772.pdfIn PDF document text
    • http://harvestcityworship.com/uploads/1/3/0/3/130323979/lugudetusavaroz.pdfIn PDF document text
    • http://familiesfeedinghope.com/uploads/1/3/0/5/130547486/4268354.pdfIn PDF document text
    • http://reelectmayorjohnstontville.com/uploads/1/3/0/5/130588821/4075075.pdfIn PDF document text
    • http://kulodadeza.rusgame.pw/uploads/2020/01/29/7005785.pdfIn PDF document text
    • http://nextlevelsc518.com/uploads/1/3/0/6/130639329/fcb740cc0495.pdfIn PDF document text
    • http://wilsonfarmmurfreesboro.com/uploads/1/3/0/2/130289774/borefulufetipigozi.pdfIn PDF document text
    • http://thesingbabysingshow.com/uploads/1/3/0/6/130639021/1121595.pdfIn PDF document text
    • http://nupelicanparty.org/uploads/1/3/0/5/130551427/130551427.html#invoice+template+uk+docIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FF 7872 bytes
SHA-256: 55490e35420a362901afdd5b1c0da7a56f6369e9da57f3b4e51a94409e089c08