Malicious PDF — malware analysis report

Static analysis result for SHA-256 f59da4184e9eec66…

MALICIOUS

PDF

77.3 KB Created: 2021-01-18 13:43:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: db19c8765b88d5fa46f93f5bb8d3de54 SHA-1: 4c6e1e340ae09f82448d3ffcb3e3f878bd85aed4 SHA-256: f59da4184e9eec660b66e106cec176a0a8d29abfb3b2bc1134b079b56c923b42
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains multiple embedded URLs, with a primary focus on directing users to a website that appears to offer a modded application. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The presence of embedded URLs and the nature of the heuristic firings suggest an attempt to trick users into visiting a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/123?utm_term=dangerous+fellows+mod+apk+2020 PDF link annotation
    • https://cdn.sqhk.co/juxerawabuf/ggAhjhd/burenin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408983/normal_5f9fe49263aaa.pdfIn PDF document text
    • https://larulesa.weebly.com/uploads/1/3/4/7/134717423/nugunuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472200/normal_5fbfb82ce4cbe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486053/normal_5fc388879783f.pdfIn PDF document text
    • https://kezobonuduwu.weebly.com/uploads/1/3/4/4/134457579/3382027.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381344/normal_5faa43a6c7d30.pdfIn PDF document text
    • https://site-1177584.mozfiles.com/files/1177584/24955965378.pdfIn PDF document text
    • https://site-1176922.mozfiles.com/files/1176922/motu_patlu_ki_jodi_cartoon_video_free_download.pdfIn PDF document text
    • https://site-1240273.mozfiles.com/files/1240273/monster_hunter_world_armor_skills_guide.pdfIn PDF document text
    • https://site-1168486.mozfiles.com/files/1168486/sudefobokawegajajimopa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/84095243855.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/2020-21_income_tax_slabs.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/computer_essentials_10.pdfIn PDF document text
    • https://s3.amazonaws.com/nawuvud/bovawenojetul.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8D9 5788 bytes
SHA-256: b53dcf3d3ba610235ef3cbbd0285a6c8adbf521194a525af8234a2211d223bb6
font_01_sfnt_off0000ec9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC9D 10504 bytes
SHA-256: fd19aae1f9eb7c137becebefb633dd06d58201fe99c3fffc96b61ef20f450c5a
font_02_sfnt_off000110cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110CD 16396 bytes
SHA-256: cac455e2405841eafc36aab02eb9cf7a84e700146dc283a7b224059cbaed9ddf

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