Malicious PDF — malware analysis report

Static analysis result for SHA-256 27e0fc0bc288e2c9…

MALICIOUS

PDF

38.0 KB Authoring application: Karbon
MD5: eba0bb1dec0b8cc1390330c386a30e19 SHA-1: a87e286cc859703748df72da59d1e334b0d7d93c SHA-256: 27e0fc0bc288e2c91a69f5be122148bd822971750594286681e419d0a91ff12e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO poisoning or to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body appears to be corrupted or contains minimal relevant text, making it difficult to ascertain the exact lure.

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://tcp-tcit.net/uploads/1/3/0/4/130488810/towugabajulurifuxa.pdf
    • http://indienavi.net/uploads/1/3/0/5/130588676/ffb3e32be3a.pdf
    • http://sessionninephotography.com/uploads/1/3/0/3/130313836/xozoguta.pdf
    • http://areacodehookup.com/uploads/1/3/0/8/130873790/ripexosezazunurif.pdf
    • http://ilovefatjacks.net/uploads/1/3/0/5/130551106/9590472.pdf
    • http://padmasitaa.online/uploads/1/3/0/5/130539002/9615532.pdf
    • http://jstepp.net/uploads/1/3/0/5/130542734/vuvopomidalo.pdf
    • http://salaamboston.com/uploads/1/3/0/7/130739938/fubelenas.pdf
    • http://www.397ocean.com/uploads/1/3/0/5/130545573/wiweluwevukigagev.pdf
    • http://myannuityguru.com/uploads/1/3/0/7/130739206/280142.pdf
    • http://tylerkingtheatre.com/uploads/1/3/0/3/130379517/silolaxafejerepusog.pdf
    • http://uxguys.mobi/uploads/1/3/0/4/130435998/a0959.pdf
    • http://backtopulse.com/uploads/1/3/0/7/130775173/mofen.pdf
    • http://calciopreviews.com/uploads/1/3/0/2/130289427/b2fe17.pdf
    • http://moonwalksdetroit.com/uploads/1/3/0/7/130775320/372f5ab.pdf
    • http://x0075085xstreamtravel.xsideas.com/uploads/1/3/0/6/130604601/130604601.html#adam+smith+economic+theory
    • http://indienavi.net/upl

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003be3.bin
14d8c54ba1167e6284b7b5e2b233a49e21419823712e055540752728a46c8778		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3BE3 7300 bytes

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