Malicious PDF — malware analysis report

Static analysis result for SHA-256 eedc023e0cd87c72…

MALICIOUS

PDF

40.6 KB Authoring application: GIMP
MD5: f2621ac1f041ce99ae08042783b7c1e5 SHA-1: 02be4339a323c72a7ad5a24554d093c606b9497c SHA-256: eedc023e0cd87c72395ff19e342a95b3acb0a65811514f325f3a6819f5e10d78
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents hosted on various domains. This behavior is indicative of a link farm or SEO manipulation tactic, as flagged by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier further support its malicious nature, likely serving as a lure to distribute other malicious content or for SEO poisoning. No scripts were extracted from this sample.

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://both-and.net/uploads/1/3/0/3/130379065/8353356.pdf
    • http://farmhub.online/uploads/1/3/0/5/130588191/e650d82111dea.pdf
    • http://www.holytrinitybalaclava.com.au/uploads/1/3/0/6/130622005/pifoxop_nonofivurogam_nowaz_kerexevofasov.pdf
    • http://premierdraftroofing.com/uploads/1/3/0/4/130493968/31ca23d9f.pdf
    • http://www.lynettebear.com/uploads/1/3/0/6/130639489/1802385.pdf
    • http://endeavorsystems.net/uploads/1/3/0/3/130313836/6cb5761.pdf
    • http://domainmovetest.net/uploads/1/3/0/3/130313500/xekajiwalovegav_vulin_xakixovujapumu_tukaropuvof.pdf
    • http://www.carcosa.com/uploads/1/3/0/2/130291355/wigepuxuzofazezes.pdf
    • http://teesarewild.com/uploads/1/3/0/6/130620970/9014218.pdf
    • http://alloexo.studio/uploads/1/3/0/6/130622047/2056820.pdf
    • http://zoomingroominfranchise.com/uploads/1/3/0/2/130271011/paraxirek.pdf
    • http://www.thesicilianscotchman.com/uploads/1/3/0/5/130539583/xamegilexu.pdf
    • http://teenmamagrown.com/uploads/1/3/0/5/130588745/822197.pdf
    • http://lippincotts.net/uploads/1/3/0/6/130639152/xexajovor.pdf
    • http://muymoda.eu/uploads/1/3/0/4/130476272/famar_dizazerataxe.pdf
    • http://bravesblog.com/uploads/1/3/0/7/130740498/d93e91eef635be.pdf
    • http://grasshoppersprings.com/uploads/1/3/0/6/130622009/599872.pdf
    • http://obtainablewellness.com/uploads/1/3/0/5/130551257/penuje.pdf
    • http://millenniallov3.com/uploads/1/3/0/5/130551551/9477a331325749.pdf
    • http://sugarmommascookieco.com/uploads/1/3/0/4/130483400/faxabomewe-fozesoputoda.pdf
    • http://beyondblesstravel.voyagerwebsites.com/uploads/1/3/0/8/130874352/130874352.html#explain+aida+model+of+communication

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033b9.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33B9 2652 bytes
font_01_sfnt_off00003f93.bin
4d44c3c5341f11749ba4b58337bad3cbbe8a17f871172e0942d27f4195643720		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3F93 7684 bytes

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