Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5486529b5febdc9…

MALICIOUS

PDF

34.4 KB Authoring application: Scribus
MD5: d29ef8830d422333576ade77488b46bb SHA-1: 3389f50c070467516d529590089fb09c53f31d26 SHA-256: c5486529b5febdc97d59b9905dbb19d97a65b605e0a27b18acfc920900f7bf37
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. No scripts were extracted, and the document body content is largely unreadable, making it difficult to determine the exact lure, but the heuristic firings are sufficient to classify this as a malicious document distributing external links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://bosolutions.eu/uploads/1/3/0/8/130813829/6f36d.pdf
    • http://mywebcheetah.com/uploads/1/3/0/7/130775980/rotusibupo.pdf
    • http://teamwhenlambo.com/uploads/1/3/0/6/130621032/paragireg-gakatanu-redekexapu-pujujamenulovak.pdf
    • http://theroverchasefoundation.com/uploads/1/3/0/5/130545484/xetogop.pdf
    • http://www.thegraphitestore.shop/uploads/1/3/0/5/130589009/4428579.pdf
    • http://kompete.net/uploads/1/3/0/6/130621479/a19ee1e51abf.pdf
    • http://specialdental.net/uploads/1/3/0/6/130621421/kuwaviwovamonabifozu.pdf
    • http://pathfinder-health.org/uploads/1/3/0/6/130605124/2165422.pdf
    • http://blackmountainscottage.com/uploads/1/3/0/7/130739240/volaruzomiri-xirukazefab.pdf
    • http://brandsview.com/uploads/1/3/0/7/130776533/2524597.pdf
    • http://findthatpartyplanau.net/uploads/1/3/0/2/130289347/713b504853c.pdf
    • http://fonestalve.com/uploads/1/3/0/5/130539679/niwaxurepopidir.pdf
    • http://rochesternybiochem.com/uploads/1/3/0/5/130539227/958de7f47e.pdf
    • http://compulsiverambler.com/uploads/1/3/0/7/130740222/41c84d106fc.pdf
    • http://resonancetapexperience.com/uploads/1/3/0/6/130620834/tusanuwanotereg_vufabaferinave_talusefurapu.pdf
    • http://marketdragon.net/uploads/1/3/0/5/130550854/28a0591fd4.pdf
    • http://simpsonandmannoptometry.com/uploads/1/3/0/7/130738752/3605503.pdf
    • http://pcbchain.co.uk/uploads/1/3/0/2/130271049/lifivus-kabafufozivoper.pdf
    • http://waltzerbooth.com/uploads/1/3/0/6/130621426/lerawo.pdf
    • http://dalal.la/uploads/1/3/0/7/130738541/dumoronozugobebeku.pdf
    • http://mjacoby88.com/uploads/1/3/0/5/130550830/jatuzajofafugifo.pdf
    • http://049months.com/uploads/1/3/0/8/130873861/deredatozazonov.pdf
    • http://treeservicemagnoliatx.com/uploads/1/3/0/7/130740356/5e8db6e95af.pdf
    • http://lisa-and-dustin.rominastiebenphotography.com/uploads/1/3/0/7/130738525/130738525.html#addition+coloring+sheets+for+kindergarten
    • http://marketdragon.net/uploads/1/3/0/5/130

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000024df.bin
b2a07cdd942e5203472572da7ff46ea6e9959a1808844501359005655285dab5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24DF 7336 bytes

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