Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bf59ff1a24aaf2c…

MALICIOUS

PDF

79.1 KB Created: 2021-02-24 01:14:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec057ff48edb658312671755bf34837d SHA-1: efef598e9bff99efd3e69ab5f2aeedf5740c40ee SHA-256: 1bf59ff1a24aaf2c874eeabab6c396b20be112413b9b6a65d6788560c85d05ca
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a large number of external links, many hosted on Weebly, suggesting a link farm or phishing attempt. The document body, though heavily obfuscated, appears to be a lure related to 'king james bible study guide pdf', directing users to external URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://maypoin.ru/wix?keyword=king+james+bible+study+guide+pdf
    • https://lulofaki.weebly.com/uploads/1/3/1/4/131453598/ce12479cf.pdf
    • https://tenimuleletef.weebly.com/uploads/1/3/4/3/134343202/sejoguluxugowelidife.pdf
    • https://xisuviwilizej.weebly.com/uploads/1/3/4/3/134320176/b57787df1.pdf
    • https://xixinuwomisit.weebly.com/uploads/1/3/1/4/131437484/butozagojewesek-jamofaxixunin-fawiguba.pdf
    • http://gladkoe-telo.xyz/poxezigodua1u5.pdf
    • https://velumosatowe.weebly.com/uploads/1/3/4/8/134883763/edb95ec.pdf
    • http://load-bcp.com/31105030435z6we5.pdf
    • https://setovejuno.weebly.com/uploads/1/3/2/6/132682792/pinaxijivorixiw.pdf
    • https://jupifezugaj.weebly.com/uploads/1/3/0/7/130739886/libiwekomo.pdf
    • https://kimidagox.weebly.com/uploads/1/3/4/4/134470984/18b78.pdf
    • http://formverifiedbadge.com/mission_mangal_movie_full_online0gzqx.pdf
    • http://tesepaxe.iblogger.org/30120769382.pdf
    • https://zubosevofugojat.weebly.com/uploads/1/3/4/3/134307347/pubikinuki.pdf
    • https://betetaguzom.weebly.com/uploads/1/3/2/3/132303315/2878468.pdf
    • http://fruit-italy.space/72515115862jpm16.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fimuwudefixolet.epizy.com/supejubotivolo.pdf
    • https://s3.amazonaws.com/wufujudisu/pojebi.pdf
    • http://zegujirekari.epizy.com/entrepreneurship_pronunciation_guide.pdf
    • https://s3.amazonaws.com/fosawef/smiling_small_baby_images_free.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f989.bin
172f60da1d55b8061b14918fd703d54c2a5066ce997a5da571246b944e447f62
pdf-font-stream PDF embedded font (sfnt) at offset 0xF989 5552 bytes
font_01_sfnt_off00010c72.bin
d1921fe2d0dbad958eb0653a71aba1c37bb2a89baf1e8bf26345ea46c79905b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x10C72 10208 bytes