Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c73d4120158ee23…

MALICIOUS

PDF

39.4 KB Created: 2020-04-09 15:48:45 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b32788d27db7030e134b173f4f4d08ea SHA-1: 1a6b83a402bc8645d6f0c731a76c1252d58c436e SHA-256: 7c73d4120158ee2322dc3e78a953998ce6d1e5053f518c553db802a5bd7d058b
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links to other PDF files hosted on various domains, identified by the PDF_SEO_LINK_FARM heuristic. The embedded document body text, though corrupted, contains a URL that matches one of the extracted links. This suggests the document is part of a link farm or SEO poisoning scheme, potentially distributing malware or phishing content through the linked PDFs. No scripts were extracted from this sample.

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://healthypleasuremx.com/uploads/1/3/0/7/130775921/130775921.html#nexus+span+port+configuration
    • http://dialsheavenlytreats.com/uploads/1/3/0/8/130814769/3deb3ca1b20617d.pdf
    • http://burgdorffimages.com/uploads/1/3/1/0/131069738/bimunud-nukoxolatoweno.pdf
    • http://liverflush.us/uploads/1/3/0/7/130739309/6476707.pdf
    • http://magicityorganics.com/uploads/1/3/0/5/130546283/tekodipijakufe.pdf
    • http://meganmann55.com/uploads/1/3/0/4/130488157/3957544.pdf
    • http://invest-aide.com/uploads/1/3/0/6/130639222/4412015.pdf
    • http://damicoarchitecture.com/uploads/1/3/1/4/131454355/7791673.pdf
    • http://outsideincounseling.org/uploads/1/3/0/3/130379651/6df53c2585.pdf
    • http://featherridgeflutes.com/uploads/1/3/1/3/131379163/560d0b38.pdf
    • http://bellafurworks.com/uploads/1/3/0/6/130639201/todolodibowan_muzorekapujupik_jopivexawikipu_taxofigajate.pdf
    • http://whylifeministries.com/uploads/1/3/0/2/130291555/kanulizifiv.pdf
    • http://realloudradio.com/uploads/1/3/0/2/130272442/jilukuga-totule-gijiwokega-baroz.pdf
    • http://reporteddas.space/uploads/1/3/0/2/130288626/fukoguzegusufud_mipiredaxiwowuk.pdf
    • http://mindfulday.org/uploads/1/3/0/9/130969336/91bad75f.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_off00007246.bin
faa021166d443b3af200e36d507b8368735bf509b7b94973fcae33b35ff5cd21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7246 7296 bytes

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