Malicious PDF — malware analysis report

Static analysis result for SHA-256 950ac7fcbc1b73d7…

MALICIOUS

PDF

25.7 KB Created: 2020-04-29 18:31:05 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 269a2f98533e929d26059d7a2598ea4e SHA-1: 467fa57c0520318c449e2c53773783533d99326e SHA-256: 950ac7fcbc1b73d7cc90d5179e38e982983cf62bb6d1b3d40da7d6b3185ee70a
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The document body also contains a URL that appears to be a lure for 'amazon prime video quora'. The primary function seems to be directing users to a network of linked PDFs hosted on unrelated domains, likely for SEO manipulation or to serve as a landing page for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://xocobean.com/uploads/1/3/0/5/130544652/130544652.html#amazon+prime+video++quora
    • http://lex-english.com/uploads/1/3/1/6/131637056/d4e180.pdf
    • http://rachelhjohnston.com/uploads/1/3/1/4/131482992/3f6a6abcde.pdf
    • http://fda-int.org/uploads/1/3/0/2/130288540/xirujuturegol.pdf
    • http://happycatplace.com/uploads/1/3/0/9/130969436/5735323.pdf
    • http://aligninsuranceservices.com/uploads/1/3/0/8/130813730/0fb24c.pdf
    • http://leylakasimova.art/uploads/1/3/1/6/131636881/sanerevotoxozalep.pdf
    • http://herblifeessentials.com/uploads/1/3/0/4/130435652/libifo-nepofetibisomi-fadefe.pdf
    • http://larsonsleadingladies.com/uploads/1/3/1/0/131070207/9707405.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_off000042db.bin
4abe364a873d2c9823a3ce6a024dc6c1520574c8a59d184b31542f65254926fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42DB 6204 bytes

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