Malicious PDF — malware analysis report

Static analysis result for SHA-256 06704dcf74e698bd…

MALICIOUS

PDF

60.0 KB Created: 2020-06-13 10:31:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7773a79e7fc7de76f1f4b47babbcacaa SHA-1: a739092bc7a21f53eaefae5f7a9bfca089c61697 SHA-256: 06704dcf74e698bd75e88daef014248160e9f2916396c1e90d090f0962423fcd
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by an ML classifier and contains a large number of external links, many of which point to similarly structured URLs. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting a link farm or redirection scheme. The embedded document body text is heavily corrupted, but the presence of URLs like http://thehoneypigbbq.com/uploads/1/3/0/5/130539714/130539714.html#d%25C3%25A1+ex+esposa+de+anuel+aa+como+se+cha suggests a potential lure or content delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://thehoneypigbbq.com/uploads/1/3/0/5/130539714/130539714.html#d%25C3%25A1+ex+esposa+de+anuel+aa+como+se+cha
    • http://biasply.com/uploads/1/3/0/5/130550937/1558381.pdf
    • http://barcorealtyofstaffordva.com/uploads/1/3/1/3/131379946/razolerigesoz.pdf
    • http://mail.kenway-container.com/uploads/1/3/0/3/130313252/bunavatawuroloba.pdf
    • http://dralanlogan.com/uploads/1/3/0/7/130775466/girotagewajil.pdf
    • http://bandityarn.co.nz/uploads/1/3/0/2/130289355/046fcecdb39.pdf
    • http://vdi-dr.froumlaw.com/uploads/1/3/0/4/130478203/ebd6ad14666c17.pdf
    • http://cornerstonemedicalbilling.net/uploads/1/3/0/7/130775528/1150264.pdf
    • http://jackstompers.com/uploads/1/3/0/5/130550683/2376677.pdf
    • http://finessebeauty.net/uploads/1/3/0/6/130621942/kamalugaja_banadiwaxolebed_mexivegitusozu.pdf
    • http://partybikebusiness.com/uploads/1/3/0/2/130289474/2521542.pdf
    • http://74-123-76-233.mgwnet.com/uploads/1/3/1/3/131378916/dexatanetoguvisununi.pdf
    • http://preachersrestaurant.com/uploads/1/3/0/3/130313415/4106995.pdf
    • http://ebricksandmortar.com/uploads/1/3/0/3/130379482/9246293.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://suvasebe.files.wordpress.com/2020/06/93522756393.pdf
    • https://tedazusalutu.files.wordpress.com/2020/06/34224801382.pdf
    • https://nufovax.files.wordpress.com/2020/06/83177901585.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b82e.bin
62ff83b4721d7c2a8b792cf3eb73de7dd5151045cbb21c6bda76b1b359da3c88
pdf-font-stream PDF embedded font (sfnt) at offset 0xB82E 13212 bytes