Malicious PDF — malware analysis report

Static analysis result for SHA-256 b42dff23a0043cf2…

MALICIOUS

PDF

37.5 KB Created: 2020-04-10 14:18:15 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 1600ccf33a2bcbf4225b113c6c1aa2b6 SHA-1: a2f6102f0c5bd3642d4c77e3be4c5cdff8540f58 SHA-256: b42dff23a0043cf28973ab968e32459a56186611586ff01729896e20dc69569e
94 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, identified as a PDF_SEO_LINK_FARM heuristic. The document body also contains a reference to 'Mpow bluetooth headphones charging cord', suggesting a lure. The primary intent appears to be directing users to a network of related domains, likely for SEO manipulation or to host further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://mandbmulti.com/uploads/1/3/0/6/130622110/130622110.html#mpow+bluetooth+headphones+charging+cord
    • http://listenlikealocal.com/uploads/1/3/1/4/131437093/fowex_ruwuzi_vepibipo.pdf
    • http://ecityjava.com/uploads/1/3/0/2/130271073/90876e.pdf
    • http://thewildwildweb.com/uploads/1/3/0/9/130969683/963ad.pdf
    • http://blueribbonbreeder.com/uploads/1/3/0/8/130873864/94e3c5.pdf
    • http://tanyapinto.org/uploads/1/3/0/4/130478067/tatiwomuwoge_mugawobojasab_mokategifudo.pdf
    • http://diamondlandscapescolorado.com/uploads/1/3/0/3/130323161/93dbdd5.pdf
    • http://zentranet.ru/uploads/1/3/0/6/130639537/mojodupup.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_off00006bd3.bin
d6facc353b68add535303b9aff3cbdb2a69353b12b292e4b44b4aa29a7f059eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD3 7544 bytes

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