Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9d464a4e64b2853…

MALICIOUS

PDF

33.2 KB Created: 2020-06-07 12:41:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa5100cfa38da426f98e7ae76bb7dfdd SHA-1: e977ed9d97a32e31b873ccb85ddaff4e6a2cedfb SHA-256: c9d464a4e64b28534ddeb9258bb1a7fa30763f9fac213fa62e4ffa282703fec7
92 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for SEO poisoning or directing users to malicious sites. The document body, though partially corrupted, includes keywords related to a 'Delonghi espresso machine manual' and references the wkhtmltopdf tool, suggesting a lure to disguise the malicious intent. The presence of a PDF link farm heuristic further supports the conclusion that this document is designed to drive traffic to external, potentially harmful, resources.

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://74-123-72-53.mgwnet.com/uploads/1/3/2/3/132303370/132303370.html#delonghi+espresso+machine+ec685+manual
    • http://kenforhighland.com/uploads/1/3/0/2/130289317/5067035.pdf
    • http://weightlossninjafast.com/uploads/1/3/0/6/130620532/be802.pdf
    • http://mail.oversightconsult.com/uploads/1/3/0/4/130488101/8c71ee48296.pdf
    • http://nitabclothingonline.com/uploads/1/3/0/8/130813855/nolof.pdf
    • https://wazowewuluvo.files.wordpress.com/2020/06/vemezej.pdf
    • https://gusabuj.files.wordpress.com/2020/06/botisekaxukikov.pdf
    • https://xuxosasi.files.wordpress.com/2020/06/36954361133.pdf
    • https://nifozulejer.files.wordpress.com/2020/06/35083693041.pdf
    • https://pekazad879287334.files.wordpress.com/2020/06/rewuverafolawelunud.pdf
    • https://lemoxox.files.wordpress.com/2020/06/86015253251.pdf
    • https://xidufunamopa.files.wordpress.com/2020/06/vuwonavogomit.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000582e.bin
44dc60195050c05e0733b79dcc9a1d41b7741e83d4d57b127567a871f08b024c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x582E 9792 bytes

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