Malicious PDF — malware analysis report

Static analysis result for SHA-256 d45342b3f86de2a4…

MALICIOUS

PDF

46.2 KB Created: 2020-06-15 22:47:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dd5a20fa1af290805f19c92eebaf1218 SHA-1: c2f5469f1c2eaa9692229ff8f9f2b210492744b7 SHA-256: d45342b3f86de2a417d3cabd1bac78a059597380c02a415030867d4b6675944a
94 Risk Score

Malware Insights

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

The PDF file contains numerous external links to various domains, a technique often used for SEO poisoning or to redirect users to malicious content. The ML classifier strongly flagged this PDF as malicious. The document body, though partially corrupted, contains text related to a TV guide and embedded URLs, reinforcing the lure. The primary attack pattern involves directing users to external sites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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://3nt.undesirable.us/uploads/1/3/1/4/131410952/131410952.html#tv+guide+for+springfield+mo
    • http://lowetruckingworld.com/uploads/1/3/0/9/130968995/7013940.pdf
    • http://omimusic.xyz/uploads/1/3/0/9/130969834/zofekabuv.pdf
    • http://quit-kl.com/uploads/1/3/0/4/130476565/215415.pdf
    • http://anywhereexcavations.com/uploads/1/3/1/4/131438786/8dd67.pdf
    • http://christinawei.com/uploads/1/3/1/4/131408772/juzetovidated.pdf
    • http://bullsnips.com/uploads/1/3/0/2/130289291/502781.pdf
    • http://thirdactleadership.com/uploads/1/3/1/4/131437005/7733058.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_off000086c2.bin
a3f2410bf0259b58c3a54f2f142437853bb8e8441744b17ab63659c044a830cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86C2 11408 bytes

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