Malicious PDF — malware analysis report

Static analysis result for SHA-256 59abbdad1ad6a001…

MALICIOUS

PDF

42.7 KB Created: 2020-03-11 03:43:49 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ce101596be70bf8007be37bd5ff5c593 SHA-1: e5505129e9afb805c7db346e688cac625d514320 SHA-256: 59abbdad1ad6a001265d3c9047b8063c0bf661c29b4df6e3ef0ac57cf00b97cc
94 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO poisoning tactic. The document body, though partially corrupted, contains text related to agriculture and includes URLs that point to other PDF files hosted on various domains. The primary function appears to be redirecting users to a network of linked documents, likely to manipulate search engine results or distribute further malicious content.

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://74-123-77-77.mgwnet.com/uploads/1/3/0/5/130550961/130550961.html#handbook+of+agriculture+icar+pdf+free
    • http://makeyourmark.shop/uploads/1/3/0/2/130289504/vujekuzasuki-mibafabe-kujidog-senovox.pdf
    • http://maximumautomation.com/uploads/1/3/0/5/130544754/lalizosutusupu-wagufimen-bakit.pdf
    • http://www.burnoutsolutions.com.au/uploads/1/3/0/8/130873790/renedetafid.pdf
    • http://capstonecenters.com/uploads/1/3/0/7/130738566/a94067dc.pdf
    • http://www.henryli.org/uploads/1/3/0/7/130740456/xadimakixakeku.pdf
    • http://officialrjmproductions.com/uploads/1/3/0/5/130588653/3100691.pdf
    • http://primdiva.com/uploads/1/3/0/7/130775505/peduporu.pdf
    • http://nusoulproductions.net/uploads/1/3/0/2/130270903/menoza.pdf
    • http://ephinityessentials.com/uploads/1/3/0/9/130969384/2dbc64a553c.pdf
    • http://pasturepride.com/uploads/1/3/0/2/130270855/5778504.pdf
    • http://www.betterexecutive.org/uploads/1/3/0/7/130738527/d45fb29d.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_off00006841.bin
f2d0c9fea84a2b8083d3e0e124db85eb8a76af6df91a761f164aeb33a372c642		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6841 8228 bytes
font_01_sfnt_off000087ec.bin
f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87EC 16204 bytes

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