Malicious PDF — malware analysis report

Static analysis result for SHA-256 050cbc356341cd48…

MALICIOUS

PDF

36.5 KB Created: 2020-04-02 11:20:36 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b8f2303a666948f533eec039d9ac8f5e SHA-1: ab194423c4652cbf81be52491e21fdd3dc3795de SHA-256: 050cbc356341cd485daee595fdf098b87b01a38bbcf0f51afe124f5342398aa9
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO manipulation tactic. The ML classifier also strongly indicated maliciousness. The embedded URLs are likely used to redirect users to malicious sites or to host further stages of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://notostraws.com/uploads/1/3/0/5/130588299/130588299.html#lg+tone+hbs+1100+review
    • http://handymanremodelingservices.net/uploads/1/3/0/3/130324292/7247734.pdf
    • http://greensboromusicteachers.org/uploads/1/3/0/6/130640060/jetufagijedekode.pdf
    • http://windwardbc.com/uploads/1/3/0/5/130544591/3110790.pdf
    • http://mpassistanteadministrative.info/uploads/1/3/0/2/130288762/d3313285.pdf
    • http://hausofbrews.org/uploads/1/3/0/6/130621942/9459285.pdf
    • http://lafayettespinners.com/uploads/1/3/0/6/130621714/613269.pdf
    • http://sewgr8fulbygyh.com/uploads/1/3/0/6/130639743/7070264.pdf
    • http://corinnedecarlo.com/uploads/1/3/0/5/130588924/gulebaj.pdf
    • http://jldprod.com/uploads/1/3/1/1/131163991/zimerixiwas.pdf
    • http://drpheatherlyttle.net/uploads/1/3/0/4/130435644/7f1b09f9563.pdf
    • http://openairtravelandtour.com/uploads/1/3/1/3/131380058/wajuj.pdf
    • http://alphegapharmacy-dacgroup.com/uploads/1/3/0/4/130488067/6356334.pdf
    • http://dreamhomeremovalservices.co.uk/uploads/1/3/0/4/130475939/b61f2c206.pdf
    • http://embraceyourshadow.com/uploads/1/3/0/5/130539350/00d618e93.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_off00006562.bin
ed5915a717213b91234fa80a4eda78346315d89ce457d9b5a548e4f38a10f5a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6562 8348 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.