Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8311e4c7cbcf7d4…

MALICIOUS

PDF

51.9 KB Authoring application: ImageMagick
MD5: 826fe52fb739a7929657a158e9107a86 SHA-1: 62fd1596f080acfc52005b06f2adc197cff10ef0 SHA-256: a8311e4c7cbcf7d4eb079ac44f49a6e71a6c261b4217e86e7e8f9b76892896da
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, indicating a link farm strategy. This is consistent with the 'PDF_SEO_LINK_FARM' heuristic firing. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent, likely related to phishing or traffic redirection. No scripts were extracted from this sample.

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://mytayloralexander.com/uploads/1/3/0/3/130324004/1715130.pdf
    • http://verticalfitness100.com/uploads/1/3/0/6/130604492/guburo.pdf
    • http://michiganbuttonsociety.weebly.com/uploads/1/3/0/6/130620958/lomizakamemi_dunojivufizan_mavarifosokega_togomi.pdf
    • http://nel.click5link.com/uploads/2020/01/28/nomekexor-zitanusut.pdf
    • http://kimchibabe.com/uploads/1/3/0/4/130490301/wovetobolol.pdf
    • http://drrichardarcher.com/uploads/1/3/0/6/130603756/1182390.pdf
    • http://msmailadministrator.net/uploads/1/3/0/6/130620274/rozigago-gopuxari-dituzovulesa-navosefo.pdf
    • http://charliemorrisey.org/uploads/1/3/0/4/130476786/9464593.pdf
    • http://dayscreekschools.com/uploads/1/3/0/6/130604735/buviximof.pdf
    • http://powertospeaknaked.com/uploads/1/3/0/5/130550910/kufupe-lakapi-murifenera-nuzofuzimijobo.pdf
    • http://clucktruckportland.com/uploads/1/3/0/4/130476244/130476244.html#venous+sinus+thrombosis+radiology

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000015a6.bin
b1d121262fefb6dd34e61de8fec9a55d05ff3f2edd9d1b876f2f1066c079ce7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15A6 9232 bytes

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