Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecab2b9f8e65e829…

MALICIOUS

PDF

37.0 KB Authoring application: Karbon
MD5: 8ec9f29afa013454c69c6e2c82f8ae3c SHA-1: 5a85f6cbd323cc43dfbbb6c079920d2097dbb4af SHA-256: ecab2b9f8e65e82969bb9fe7ba479d8890374ec9f0633b5ef63d50fcc63727c6
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection indicates this is a known phishing variant. The embedded URLs likely serve as a lure to redirect users to malicious sites or to distribute further malware. No scripts were extracted from this sample, limiting the ability to determine specific execution chains.

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://journeykouture.com/uploads/1/3/0/6/130604147/4398107.pdf
    • http://dzwiekochmura.com/uploads/1/3/0/6/130639382/xekesekerez_digulu_vonefararapuk_sivar.pdf
    • http://mycharlottedoulas.com/uploads/1/3/0/8/130814195/e413b.pdf
    • http://nfcfleonardville.com/uploads/1/3/0/4/130435598/zebosikivokafabasa.pdf
    • http://holidaydressboutique.com/uploads/1/3/0/9/130969103/4379efac85d50fe.pdf
    • http://painfulleg.com/uploads/1/3/0/4/130476798/goxedodoz.pdf
    • http://www.us-againsttheworld.com/uploads/1/3/0/6/130603715/luxenaviviruzon_nemunuva.pdf
    • http://thestuff.org/uploads/1/3/0/7/130776562/nekarenojo.pdf
    • http://mytorialex.com/uploads/1/3/0/2/130288830/jabuxax-wasosutaje-metebirovokuz.pdf
    • http://webdisk.bayviewmedical.com/uploads/1/3/0/5/130546040/35b540a80d30.pdf
    • http://smartlets.org/uploads/1/3/0/6/130620557/neruruzizu_sutofojavonezul.pdf
    • http://rv1.voyagerwebsites.com/uploads/1/3/0/4/130475901/130475901.html#how+to+put+thread+in+a+singer+simple+sewing+machine

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000039cf.bin
5598b19eb2762325dd5f2f4b64ad6845cf2da54d8306b9e1a63d9936c2c07581		 pdf-font-stream PDF embedded font (sfnt) at offset 0x39CF 7812 bytes

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