Malicious PDF — malware analysis report

Static analysis result for SHA-256 7771f66a0ce3b2b5…

MALICIOUS

PDF

32.3 KB Created: 2020-05-21 03:48:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b626ee2bb28828f288deba08fe581eae SHA-1: 66dd936c9a3e49dda533ce4cc923804a7bc7113a SHA-256: 7771f66a0ce3b2b5492d5529d9dbb6645fdbb9d4be881806c3941203e8c5069f
96 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, identified as a PDF SEO link farm. The primary URL found in the document body, 'http://iweargreatness.com/uploads/1/3/0/7/130738657/130738657.html#wwe+2k14+xbox+360+cheats', suggests a lure related to game cheats. The ML classifier strongly indicates maliciousness, and the sheer volume of outbound links points towards a deceptive or manipulative purpose, likely to drive traffic or distribute further malicious content.

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://iweargreatness.com/uploads/1/3/0/7/130738657/130738657.html#wwe+2k14+xbox+360+cheats
    • http://thebooingsnowball.com/uploads/1/3/1/3/131398374/gavitex.pdf
    • http://organizeit.info/uploads/1/3/1/4/131407736/b2c97d.pdf
    • http://rightbyyoursidehomecare.com/uploads/1/3/0/5/130540063/6d0d5c734.pdf
    • http://fitnessliquidatorsaz.com/uploads/1/3/0/6/130605203/4029227.pdf
    • http://thewilkinsonswordshop.com/uploads/1/3/0/7/130776386/8705953.pdf
    • http://jesus-festival.com/uploads/1/3/1/4/131483421/pojipipatodul.pdf
    • http://realcarpentry.com/uploads/1/3/1/8/131871569/f5e327734acc0.pdf
    • http://bag-nasty.com/uploads/1/3/0/2/130273915/xedudor_zepoge_najafulame.pdf
    • http://tararevyn.com/uploads/1/3/0/3/130324011/3481258.pdf
    • http://gasandgrill.com/uploads/1/3/1/8/131856191/gerutuvewi-wewelaropigowe.pdf
    • http://planwdw.com/uploads/1/3/0/6/130620537/xukosajom.pdf
    • http://environcards.org/uploads/1/3/0/9/130969541/gopif-muxowete-nimizujelazupu.pdf
    • http://elaurayoga.net/uploads/1/3/0/5/130550714/9864c92eba705.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054f9.bin
ff0f00968828043198ff0f883ae0c76d729295f3d3d5c2e2dac4e46fec1d6073		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54F9 9740 bytes

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