Malicious PDF — malware analysis report

Static analysis result for SHA-256 7476001e7b9a4621…

MALICIOUS

PDF

44.6 KB Created: 2020-06-21 21:23:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f70321fe8e003fd907eca3cb938882f5 SHA-1: 3e07ef1967d6fc06da83faeb0224070bdc42fcfc SHA-256: 7476001e7b9a4621e9ff83bee4a7081f2079f3d91e050a088e3e465543901cab
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier as malicious. It contains a large number of external links, many of which point to PDF files hosted on various domains, suggesting a link farm or redirection mechanism. The document body contains references to a 'Ritetemp model 6080 manual' and includes URLs that likely serve as the next stage of the attack, potentially leading to further malicious content downloads.

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://activatedance.com/uploads/1/3/0/6/130604517/130604517.html#ritetemp+model+6080+manual
    • http://balimodern.net/uploads/1/3/0/2/130289509/felenituzasexa.pdf
    • http://5k2own.com/uploads/1/3/0/2/130270936/8c04f12862.pdf
    • http://hillclimbracingtips.com/uploads/1/3/0/2/130272892/e77351c1f125a55.pdf
    • http://blueflamingos60s.co.uk/uploads/1/3/1/4/131406811/c4d5ce0c0f3cd37.pdf
    • http://the-lemons.com/uploads/1/3/0/6/130604874/9574193.pdf
    • http://wellselevated.com/uploads/1/3/0/5/130542996/kotobutaripe-janonajogap-xeretukinowif.pdf
    • http://redlistapps.com/uploads/1/3/0/5/130590030/xutatateje_laxesawo_xefuf.pdf
    • http://mx.elgaby.com/uploads/1/3/1/6/131636707/f2496bb978.pdf
    • http://dbstaffing.org/uploads/1/3/1/8/131856715/2677411.pdf
    • http://thepowderroom.org/uploads/1/3/0/5/130540567/bagexaroxon-putelefawu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ffb.bin
2b7a3a81c3c20113c2890ba7ef00a27d9d7ef3152467ad2ce7c1e609d459df1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FFB 5208 bytes
font_01_sfnt_off0000819a.bin
cc80335cdacc4454180a75b8a9ec342c7012a409dd79f53381ee6f9faba22a27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x819A 10832 bytes

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