Malicious PDF — malware analysis report

Static analysis result for SHA-256 78ad89214b08bd4c…

MALICIOUS

PDF

38.7 KB Created: 2020-03-13 04:08:21 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 980f30e96cb7934b2430da0b468d5386 SHA-1: fd7d96348a5a0e01833e2bae16cd544b47832d18 SHA-256: 78ad89214b08bd4cf5f86792cd1c98eb14783f9b7b17711169e3e80ab0290201
96 Risk Score

Malware Insights

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

The PDF contains numerous external links, suggesting a link farm or redirection scheme designed to lead users to malicious content. The embedded URLs and the heuristic 'PDF_SEO_LINK_FARM' indicate a pattern of distributing links to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest an attempt to redirect users to malicious sites, likely for further exploitation or phishing.

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://host64.carmichaelnl.com/uploads/1/3/0/5/130590217/130590217.html#l%27agriculture+et+le+d%C3%A9veloppement+durable+pdf
    • http://mmareport.net/uploads/1/3/0/6/130620468/61c9c263ab70fb.pdf
    • http://seldomimages.com/uploads/1/3/0/4/130483117/wiseko_rajefojo_pabojixarewukow_kovoreja.pdf
    • http://stmcclothing.eu/uploads/1/3/0/7/130739658/b27ea315.pdf
    • http://schwarzkopf-verlag.net/uploads/1/3/0/7/130775916/boweguladakidiw-larawofavug-wosex.pdf
    • http://www.missionbluecamp.com/uploads/1/3/0/5/130588672/norasik.pdf
    • http://www.tlcmoab.com/uploads/1/3/0/3/130323573/teponodawowur.pdf
    • http://www.thebestofmemphis.com/uploads/1/3/0/6/130639712/735a0.pdf
    • http://agoffacademy.com/uploads/1/3/0/5/130539022/312528.pdf
    • http://katiegrzybowski.com/uploads/1/3/0/5/130544625/4101284.pdf
    • http://12poundsdown.com/uploads/1/3/0/6/130603683/pesevemives-zusebata.pdf
    • http://citizens-medicare.com/uploads/1/3/0/7/130776499/kipegejezixosi.pdf
    • http://emilysartglass.com/uploads/1/3/0/5/130590217/35cd2c679a38.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_off00006cfa.bin
d189a6b8e0f996e170e834c5d7f7800dfff00264012b5dd64adbe30099ce861c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CFA 8596 bytes

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