Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ced4bdb910a2da6…

MALICIOUS

PDF

38.5 KB Created: 2020-05-24 06:30:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d6b06f1a7acbdd6e1d25fcbfee9b73b7 SHA-1: 15c9d2f765082f2c8412ad2e4df91b50d5ad90c0 SHA-256: 4ced4bdb910a2da62cc03eed13cb665718a7bbd894ace0bfec52e29c7612cdcc
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body text, though partially corrupted, includes the phrase 'The greatest salesman ever' and references wkhtmltopdf, suggesting a lure. The primary attack pattern involves directing users to a vast array of potentially malicious or SEO-manipulated websites.

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://fbcdillsboro.org/uploads/1/3/0/6/130640162/130640162.html#the+greatest+salesman+ever
    • http://slime2go.org/uploads/1/3/0/8/130874248/0ca63a4626d6.pdf
    • http://mobilpapershredding.com/uploads/1/3/0/7/130739127/a10f6.pdf
    • http://consumerism.us/uploads/1/3/1/6/131606231/pikatetaxu.pdf
    • http://beingsemprendedores.com/uploads/1/3/1/4/131438305/sagizefitexovavafa.pdf
    • http://crowlitmag.com/uploads/1/3/1/4/131453031/2222862.pdf
    • http://sirhall.com/uploads/1/3/0/4/130483769/6836326.pdf
    • http://thesaltyfox.net/uploads/1/3/0/6/130621131/7479399.pdf
    • http://mail.kristiexord.com/uploads/1/3/1/4/131407698/5553402.pdf
    • http://wildlynativeflowerfarm.us/uploads/1/3/0/6/130639950/kizot_gulasinoju_sesajunututu_vanuveto.pdf
    • http://502-events.com/uploads/1/3/0/7/130776756/bababufegaloredesali.pdf
    • http://davewatersvo.com/uploads/1/3/1/4/131453395/d9e4b.pdf
    • http://sportsgamesconnection.com/uploads/1/3/0/3/130323091/1847879.pdf
    • http://naturals4u.net/uploads/1/3/0/5/130588570/bilesesajive-wivetelapojiju-daziv-nekizov.pdf
    • http://sudburycommercialhoodcleaning.com/uploads/1/3/1/3/131381078/xetakogagosogulubaz.pdf
    • http://aztscm.com/uploads/1/3/0/4/130483678/d05c7d65.pdf
    • http://drnuuwan.com/uploads/1/3/0/2/130271255/c33944bc5efe.pdf
    • http://tieroneservicesolutions.com/uploads/1/3/0/8/130814782/visuxabiji.pdf
    • http://aokassistantservices.com/uploads/1/3/0/6/130622049/5857446.pdf
    • http://deluxehomehvac.com/uploads/1/3/1/6/131637175/sinenixemewutax.pdf
    • http://redrockranch.biz/uploads/1/3/0/8/130873783/fajozimujelowe_wajesefi.pdf
    • http://webmail.willkaelin.com/uploads/1/3/0/4/130489898/nidefu_digupi.pdf
    • http://aircamdroneservices.com/uploads/1/3/0/5/130539597/vojetagumazitow-lugenekew.pdf
    • http://multicaracessorios.com/uploads/1/3/0/7/130740616/3449989.pdf
    • http://heartsharespringgala.com/uploads/1/3/0/7/130775199/1493829.pdf
    • http://clinicianeducationexchange.org/uploads/1/3/1/4/131455734/a5f9730b1a5c.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_off0000697e.bin
3792cc45d7d6c38c7fdca76f66df50ce89579bc12b4a725b0b4d5f014d86a881		 pdf-font-stream PDF embedded font (sfnt) at offset 0x697E 10676 bytes

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