Malicious PDF — malware analysis report

Static analysis result for SHA-256 d16523262a7c9d13…

MALICIOUS

PDF

39.7 KB Created: 2020-03-29 06:21:26 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 96ff4ebb4409f943062c62f953a871a4 SHA-1: c5693a9fad9291299bdabe663d858ae1d5e1540b SHA-256: d16523262a7c9d13d5900d0ff7714f3c6766059accc54936872def1d953f2565
92 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, a common technique for SEO poisoning or redirecting users to malicious sites. The document body, though partially corrupted, references 'Childe Harold's Pilgrimage' and includes the wkhtmltopdf application name, suggesting it was generated to appear as a legitimate document. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous unknown-reputation URLs indicates a high likelihood of a phishing or malware distribution attempt.

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.
  • 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://74-123-77-115.mgwnet.com/uploads/1/3/0/5/130588936/130588936.html#childe+harold%27s+pilgrimage+summary+canto+1
    • http://tressesaunaturale.com/uploads/1/3/0/3/130313531/2580411.pdf
    • http://opmbrands.co/uploads/1/3/0/9/130969824/pawojuxikegabog.pdf
    • http://marymacken.com/uploads/1/3/0/4/130435819/adc24b2.pdf
    • http://datahalos.com/uploads/1/3/0/5/130540282/2a0ffcc.pdf
    • http://honeymoonsandtours.com/uploads/1/3/0/4/130488512/4731395.pdf
    • http://aishascloset.com/uploads/1/3/0/8/130874055/welosutar.pdf
    • http://mta-sts.mail.djfainphotography.com/uploads/1/3/0/6/130620492/birokopedekada.pdf
    • http://theglassacorn.com/uploads/1/3/0/5/130543787/1153360.pdf
    • http://musesinthevineyard.com/uploads/1/3/0/3/130379423/883183.pdf
    • http://lavenderfarm.org/uploads/1/3/0/7/130739169/komobelil-sedikiwaxetotej.pdf
    • http://darasyrkin.net/uploads/1/3/0/5/130590738/sofuvagikobopile.pdf
    • http://mx.lindafolljohnson.com/uploads/1/3/0/7/130739894/4b08756.pdf
    • http://texasaccidentdoctors.com/uploads/1/3/0/7/130775127/2645546.pdf
    • http://jacobsa.net/uploads/1/3/0/6/130604147/nubodidotopi.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_off00007173.bin
abd98e96f311a050f4ed8deafb2bb78ebd56957555e252d8a5de6698c5f15486		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7173 7948 bytes

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