Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d282f4ae0667009…

MALICIOUS

PDF

41.2 KB Created: 2020-05-16 08:44:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de3d08423ea786830507a0eae8ee1e84 SHA-1: 927efdf9bdeaff1175181e9010530f9a584ad4e0 SHA-256: 0d282f4ae0667009935fa018be0244da7b491a6e7f0479be2828ca74a79afa5c
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO spamming operation. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the presence of numerous external URLs points towards a potential redirection to malicious content or phishing 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://sensitiveminds.org/uploads/1/3/0/7/130775784/130775784.html#elementor+header+template+not+showing
    • http://readwelltutoring.com/uploads/1/3/0/5/130546237/9403124.pdf
    • http://reconnecting-families.com/uploads/1/3/0/5/130541445/e033d514b4e58cb.pdf
    • http://thefreedomroots.com/uploads/1/3/0/3/130313108/0701a.pdf
    • http://corvedo.com/uploads/1/3/1/4/131453253/5925160e9d64b3e.pdf
    • http://ballardholdingsllc.com/uploads/1/3/0/7/130738700/boginufemusi.pdf
    • http://alfacucine.com/uploads/1/3/0/2/130291769/a6e2a45c3.pdf
    • http://urban-goose.com/uploads/1/3/1/4/131454114/5209291.pdf
    • http://globalstrategylabs.com/uploads/1/3/0/6/130621840/kalom.pdf
    • http://15-below.com/uploads/1/3/0/5/130588688/tegajovelisa_bevilifu_bexerowugo.pdf
    • http://redmaplecountryclub.com/uploads/1/3/1/8/131856041/6070e13c4e45.pdf
    • http://glenwoodengineering.com/uploads/1/3/1/4/131453051/jibowake.pdf
    • http://olneyfarmandartmarket.com/uploads/1/3/0/9/130969146/makitixu_lunen_tawirex.pdf
    • http://pressadvocate.com/uploads/1/3/0/8/130873958/02e035d177aa68.pdf
    • http://malcolmshabazz.org/uploads/1/3/0/6/130604226/9097698.pdf
    • http://mmedicalgroup.net/uploads/1/3/0/4/130435685/jetawoxinepo-wixowurawami-pezunixomek-sifinozusamusi.pdf
    • http://byjingo.biz/uploads/1/3/0/9/130969983/wakuroj-vagabururi.pdf
    • http://brennanrestorations.com/uploads/1/3/0/7/130775017/rixilifafujijezetor.pdf
    • http://anitamorrissey.com/uploads/1/3/1/6/131607005/4675052.pdf
    • http://aawphotography.com/uploads/1/3/1/3/131380636/2953038.pdf
    • http://halftheskydesigns.com/uploads/1/3/0/2/130287401/e258636361f3f5.pdf
    • http://meganrobleshair.com/uploads/1/3/1/4/131437676/1465576.pdf
    • http://barrons-indywomen.com/uploads/1/3/0/3/130323232/9e1238252.pdf
    • http://autonomouswriting.com/uploads/1/3/0/5/130551187/dozejem_gifopemixanugo.pdf
    • http://poofypals.com/uploads/1/3/0/3/130312991/ff6c326ec550.pdf
    • http://mikejblackwell.com/uploads/1/3/0/8/130873912/9929361.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_off000072fa.bin
1537f778ad6ec92e510d93f2451a364499bedabb9df1af1cff59ca1eadf689d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72FA 10916 bytes

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