Malicious PDF — malware analysis report

Static analysis result for SHA-256 d584da71864ae91d…

MALICIOUS

PDF

35.5 KB Authoring application: GIMP
MD5: 972a57f1ee97ec5c5a098a6963acefe7 SHA-1: 14189d4e2bd15772a39248578e95af6a99a47845 SHA-256: d584da71864ae91dbe244fdb1c03bf7dd199a684c23b868c99a776f1f19c165e
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files, indicating a link farm or distribution mechanism. ClamAV identified this as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', and a critical heuristic detected a 'PDF_SEO_LINK_FARM' with 22 external links. The document body is heavily obfuscated and contains no clear textual lure, but the overall structure and heuristic firings strongly suggest a malicious intent to redirect users to potentially harmful content.

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://plantationpestservices.net/uploads/1/3/0/7/130776085/zekokinidafo.pdf
    • http://beezneezsausages.com/uploads/1/3/0/3/130379590/wopimubu-boxedovutek-ruvevifareda-sijiri.pdf
    • http://codemonster.com/uploads/1/3/0/6/130621502/faxevefale.pdf
    • http://beautybynatasha.co.uk/uploads/1/3/0/8/130814070/b782e92.pdf
    • http://batteryparkschool.com/uploads/1/3/0/6/130639800/vetukekowamisi_rereko_tobalodu.pdf
    • http://www.altomslankeprodukter.no/uploads/1/3/0/3/130313729/gaxon.pdf
    • http://mediherba.com/uploads/1/3/0/6/130622053/19ec6f.pdf
    • http://pokupki.space/uploads/1/3/0/7/130776808/sukudo-zezibe-nupamigivaxifas-nesexigalisug.pdf
    • http://www.silkypetusa.com/uploads/1/3/0/3/130323814/970139.pdf
    • http://mta-sts.mail.idahohorsecouncil.com/uploads/1/3/0/6/130605078/3838520.pdf
    • http://www.702291303949078184.com/uploads/1/3/0/7/130739301/4791344.pdf
    • http://x0955303xstreamtravel.xsideas.com/uploads/1/3/0/6/130621865/130621865.html#abdominal+exercises+for+elderly+with+osteoporosis
    • http://pokupki.space/uploads/1/3/0/7/130776808/sukudo-zezibe-nupamigivaxifas-n

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000322a.bin
07a98b6081c960abc4ee51559f2790389adbb75b89be4f85652b687a49e58698		 pdf-font-stream PDF embedded font (sfnt) at offset 0x322A 8444 bytes

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