Malicious PDF — malware analysis report

Static analysis result for SHA-256 140229ea77bc2a24…

MALICIOUS

PDF

40.1 KB Created: 2020-04-28 02:53:30 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 76b487dbfbb660daa5a3657e86e6dd98 SHA-1: 8f11b59fb0ae8dd8bc62b015c2ce394368c47328 SHA-256: 140229ea77bc2a24133d8b6009f3397e9db66d689c074682d40081140f4d5315
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous external links, identified as a link farm, likely intended to redirect users to malicious content. The document body, though partially corrupted, suggests a lure related to 'debtors report' to encourage clicks. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to exploit users through these links.

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://myytr.net/uploads/1/3/0/7/130739839/130739839.html#bcra+informe+deudores+por+cuit
    • http://myccmgonline.com/uploads/1/3/0/8/130814597/2550816.pdf
    • http://sasmitaworld.org/uploads/1/3/0/3/130313495/6549297.pdf
    • http://liamoneilmusic.com/uploads/1/3/0/6/130604256/2244759.pdf
    • http://roundpondartgalleryandshoppe.com/uploads/1/3/0/4/130436096/zibiti_nukakaberelab.pdf
    • http://carmel-valley-homes-in-palmilla.com/uploads/1/3/0/2/130270903/nejonolenigav.pdf
    • http://onlinehealtharticles.net/uploads/1/3/1/6/131637333/xotonoronotono-vejexolize-rubon.pdf
    • http://southmainmustangs.com/uploads/1/3/0/4/130483047/1038416.pdf
    • http://cegainvestments.com/uploads/1/3/1/3/131384374/korozux-femip.pdf
    • http://capetownweddingphotography.studio/uploads/1/3/1/3/131383594/3b0128738839.pdf
    • http://amethystvisions.com/uploads/1/3/0/7/130739131/8400290.pdf
    • http://theseshirtsareawesome.com/uploads/1/3/1/6/131607930/dovuvedisogilolip.pdf
    • http://wepix.studio/uploads/1/3/0/5/130544968/fotizinig.pdf
    • http://pan-education.com/uploads/1/3/1/4/131482995/3bf17226d.pdf
    • http://cypressgrovepto.com/uploads/1/3/1/3/131379113/bimarefunaleli.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006987.bin
5863da667ad5217201bb7e426802a78686c1c9bdbc16d1aa5a5e6710b4fc42fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6987 8488 bytes
font_01_sfnt_off00008898.bin
a1600c79331cba21b3b4a1f056a9d989f02b1280d9db796053b5096bff0b23f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8898 2000 bytes

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