Malicious PDF — malware analysis report

Static analysis result for SHA-256 e646f700d44a6ebe…

MALICIOUS

PDF

40.7 KB Authoring application: GIMP
MD5: d31e617cdc3c3509f4999cded5f67f26 SHA-1: 290e290c47ca4fc1933ba79dcb56d09cb6ae334e SHA-256: e646f700d44a6ebeb65efd35536921f8761047a2e2cb6b73e7db581cd0ac9037
150 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV also flagged this file as malicious, with ClamAV specifically identifying it as Pdf.Phishing.TtraffRobotInstall. The embedded document body text is heavily obfuscated and does not provide clear intent, but the overall structure and heuristic firings strongly suggest a phishing or SEO manipulation campaign.

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://www.southernfrequencies.com/uploads/1/3/0/2/130271015/kajibodanuvavowuli.pdf
    • http://solit.club/uploads/1/3/0/5/130543848/2086252.pdf
    • http://oest.juniortalent.dk/uploads/1/3/0/6/130604401/xaxanizasat.pdf
    • http://projectgrowca.com/uploads/1/3/0/6/130605312/pevotuxafexew.pdf
    • http://rickandjudy.net/uploads/1/3/0/8/130874457/c9f510073aa6.pdf
    • http://roguecosmetique.shop/uploads/1/3/0/2/130272356/8203144.pdf
    • http://schwarzcarson.com/uploads/1/3/0/2/130272342/16ee1.pdf
    • http://onlybestcasinos.com/uploads/1/3/0/2/130273582/pogowerorivugevatej.pdf
    • http://geekpursuits.org/uploads/1/3/0/8/130814526/dbffc63a9cbf.pdf
    • http://madelynarthur.com/uploads/1/3/0/6/130621477/55ce0a04de591c.pdf
    • http://v2leadership.com/uploads/1/3/0/6/130620924/fuxafoteme_serimozozon.pdf
    • http://theaestheticskinstylist.com.au/uploads/1/3/0/6/130604486/sewezot.pdf
    • http://kmotionkoncepts.com/uploads/1/3/0/7/130738984/buzejematevivovumin.pdf
    • http://www.jelprojects.com/uploads/1/3/0/8/130814245/9777938.pdf
    • http://alicezeng.com/uploads/1/3/0/6/130620934/9108815.pdf
    • http://nchep2017.org/uploads/1/3/0/3/130313314/zovosomiwapipi.pdf
    • http://3ljmr.bpmtc.com/uploads/1/3/0/6/130604363/130604363.html#eclerx+interview+questions+for+financial+analyst+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004343.bin
5adb1eccb84a1328d574309f87d4237c23754398f01dc544aa77542e85223e15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4343 8144 bytes

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