Malicious PDF — malware analysis report

Static analysis result for SHA-256 02f498ba4632bfb7…

MALICIOUS

PDF

34.7 KB Created: 2020-04-05 07:16:40 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 0c62090c91d70b0b6b449e80a242a2c8 SHA-1: 20f8196dad7ec95021842e5baa94fbb39e2ac830 SHA-256: 02f498ba4632bfb7ee6871be910bd52f4cab802afd3ae2815dae06d23288621e
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are hosted on unrelated domains and appear to be part of a link farm designed to manipulate search engine results. The document body text, while appearing to be a search query, is likely a lure to encourage users to click on these malicious links. No scripts were extracted, but the presence of numerous external links suggests an attempt to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://unitedislamiccenter.net/uploads/1/3/1/3/131383614/131383614.html#2001+honda+400ex+shop+manual
    • http://jmagalskiphotography.com/uploads/1/3/0/2/130289733/vujalinol.pdf
    • http://bemeonline.net/uploads/1/3/0/4/130488445/01165591d197.pdf
    • http://nwprovideo.ca/uploads/1/3/1/1/131163752/zawefebonuxokatuta.pdf
    • http://ksbassociates.com/uploads/1/3/1/1/131164437/roxune-tuxapibapada-tixozejenifotu.pdf
    • http://blissmassage.ca/uploads/1/3/0/5/130552106/tikod.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_off00005dd7.bin
58077212b7c9cef9c1c1b63472cb8c26afc2083fe4781b0c168a426d313415d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD7 8044 bytes

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