Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd5bdaa08ce4a204…

MALICIOUS

PDF

43.8 KB Created: 2020-06-19 16:41:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f7e18864c702e65bbbd30e9bc7cd7a38 SHA-1: 7ae70aeaeacd6820b856268f75e4f34f21be5d5f SHA-256: fd5bdaa08ce4a204cb6df3d81159c9e8f9228b792b888845ae3b2facac011cc7
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF document contains numerous external links, a common technique for SEO spam and phishing. The document body, though heavily obfuscated, suggests a lure related to 'Garage band podcast tutorial'. The presence of multiple PDF links, many with numeric or generic slugs, indicates a link farm designed to drive traffic to malicious sites. The ML classifier strongly flagged this PDF as malicious.

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://sta-66-99-58-203.ladse.org/uploads/1/3/0/5/130588452/130588452.html#garage+band+podcast+tutorial
    • http://www4.greenhauss.com/uploads/1/3/1/8/131857523/4226863.pdf
    • http://inshopper.site/uploads/1/3/2/3/132302782/120905.pdf
    • http://mgugeldesign.com/uploads/1/3/0/6/130621357/sisinigojoja_fujowafibu.pdf
    • http://weathercharge.org/uploads/1/3/1/6/131606411/44048.pdf
    • http://i-405corporatecenter.com/uploads/1/3/0/7/130775567/regowod.pdf
    • http://3xa.undesirable.us/uploads/1/3/0/6/130639180/2292539.pdf
    • http://scientopiadiscoverycenter.com/uploads/1/3/0/2/130274376/e167befd0cea33.pdf
    • http://countmarketing.com/uploads/1/3/0/2/130289799/tirufatekitu_nigoxudesovopis_fokobafozujisof.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_off00006e7b.bin
a56c093137cf0a8646bda16d4d9683bc6909bafa64ef4a20ecf50096f1114019		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E7B 5296 bytes
font_01_sfnt_off0000807e.bin
5e4c75bd0226bf6c7e01c4a2cf5bce63164fb0822144698a77db5ca2f79f457b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x807E 10116 bytes

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