Malicious PDF — malware analysis report

Static analysis result for SHA-256 69662645eb33e1b6…

MALICIOUS

PDF

42.4 KB Created: 2020-05-19 08:51:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b864d37d4a5cded86a108230383c500c SHA-1: 2eb415127ddb7d575c22d04c40a5e57bd924e0ef SHA-256: 69662645eb33e1b6dcd01c480ed8af78b0ca9d0282691d824c32b7100a45971a
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, a technique often used for SEO spam or to distribute malicious content. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a link farm. While no scripts were explicitly extracted, the presence of numerous URLs suggests a potential for downloading further payloads or redirecting users to malicious sites.

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://teamgls.com/uploads/1/3/1/1/131164392/131164392.html#the+life+changing+magic+of+tidying+up+free+ebook+download
    • http://houstontxsmarthome.com/uploads/1/3/1/4/131453712/zakopulagif.pdf
    • http://ambereenjaffer.com/uploads/1/3/0/8/130874358/4654566.pdf
    • http://yvettephotography.com/uploads/1/3/1/3/131384336/4239972.pdf
    • http://zeeshanbaig.com/uploads/1/3/1/3/131398497/nupivosozupowoxo.pdf
    • http://firstbaptistpj.com/uploads/1/3/0/7/130775275/tijoxemox-xivadonetodeli-nirik-jimuvig.pdf
    • http://fghotdogs.com/uploads/1/3/1/1/131164392/xiralizerikebokof.pdf
    • http://sflavailabilities.com/uploads/1/3/1/3/131383837/4238456.pdf
    • http://kairos-meraki.us/uploads/1/3/0/5/130550782/c3bb583991c6d.pdf
    • http://lawpracticeadvisors.com/uploads/1/3/0/7/130739875/04bbcc937ff5.pdf
    • http://wingman.capital/uploads/1/3/1/6/131606011/36ed2cf03ff6.pdf
    • http://hollycash.shop/uploads/1/3/0/5/130551445/vebukajum.pdf
    • http://madebymummy.net/uploads/1/3/1/3/131397964/6394076.pdf
    • http://party2go.org/uploads/1/3/1/3/131379069/kadoxanoxaxoledez.pdf
    • http://pupinvogue.com/uploads/1/3/1/4/131455663/ziguna.pdf
    • http://supportparentsg.com/uploads/1/3/1/4/131454051/f90ba7bf.pdf
    • http://logansparksproductions.com/uploads/1/3/1/3/131380848/navesiweb.pdf
    • http://tampabaerealtors.com/uploads/1/3/0/8/130873979/bd8ce710e0.pdf
    • http://maikodeco.es/uploads/1/3/0/2/130272428/9702539.pdf
    • http://prosperityhousing.info/uploads/1/3/1/3/131379194/6003178.pdf
    • http://mindbodycreate.com/uploads/1/3/1/8/131872198/mikuvozasakapa.pdf
    • http://pneumaticpartscompany.com/uploads/1/3/0/9/130969115/raluwubo.pdf
    • http://danaligt.com/uploads/1/3/0/3/130313153/megelas.pdf
    • http://usilb.com/uploads/1/3/0/2/130292173/9581173.pdf
    • http://abullfrogstudio.com/uploads/1/3/0/7/130775643/a5bd6381f22f281.pdf
    • http://gregdixoncartoons.com/uploads/1/3/1/6/131636627/gazurovog-tefenipazini.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_off000077a9.bin
62d4b980bd62dbdd26264e548caf467778770f6772d7e9763b52c22c38502b7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77A9 11060 bytes

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