Malicious PDF — malware analysis report

Static analysis result for SHA-256 18c49839f673be43…

MALICIOUS

PDF

44.3 KB Created: 2020-04-01 23:22:06 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6c45e3ec076db23de9f92fa41bcfd063 SHA-1: eaa567cb2de8b1e2350cdad02bda7e5126867550 SHA-256: 18c49839f673be43e8b400b19bb2d9e8b474a62c1adabab292736a7feecd63ba
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links to other PDF files hosted on various domains, indicating a link farm or distribution mechanism. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of numerous external links suggests an attempt to direct users to potentially harmful content or for SEO manipulation.

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://tremachining.com/uploads/1/3/0/9/130969680/130969680.html#world+of+darkness+caine
    • http://lonepeakadvisors.com/uploads/1/3/0/5/130588376/fosevamejafujo-fomewobixaz-nufakuveluwitam-bojiliferakinez.pdf
    • http://christian-charles-photography.com/uploads/1/3/0/5/130542953/vufidiporemu.pdf
    • http://wildirisimagery.com/uploads/1/3/0/8/130873872/8031091.pdf
    • http://ageless-wellbeing.com/uploads/1/3/0/5/130588656/vugazosa.pdf
    • http://anishandshiny.org/uploads/1/3/1/3/131380625/6318232.pdf
    • http://bonnsbroncos.com/uploads/1/3/0/5/130544954/f3783ac1dba914.pdf
    • http://deneigementcpl.com/uploads/1/3/0/4/130475984/selaviwob.pdf
    • http://nyaticapital.com/uploads/1/3/0/4/130476347/wosid-raxak.pdf
    • http://summerztreasures.com/uploads/1/3/0/5/130540286/gixinekojimu_dakomogosizi.pdf
    • http://tom2beta.com/uploads/1/3/1/4/131482894/8911b.pdf
    • http://sicati.com/uploads/1/3/0/6/130604419/7659536.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_off00008201.bin
5370e92257a633cae4609002eb058ca64cd5fb22306b7f16d8ce5b60f995e068		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8201 8668 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.