Malicious PDF — malware analysis report

Static analysis result for SHA-256 185363a0ffa10cd0…

MALICIOUS

PDF

90.3 KB Created: 2021-03-22 11:38:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8185e8ba5a473dc465243693cbbc6aeb SHA-1: 1a745f418b6ef96016d9da7fd9c2999cfcd1b0df SHA-256: 185363a0ffa10cd0bc2ad369c95f9cc949ea79d9fa94be4cdc1e5f3cf57582ca
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to disposable domains, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, appears to contain metadata related to PDF generation and potentially misleading content, aiming to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/aws?utm_term=how+to+remove+door+rubber+on+lg+washing+machine PDF link annotation
    • http://vufiwopader.medianewsonline.com/spoken_english_in_urdu.pdfIn PDF document text
    • https://murasujudadalox.weebly.com/uploads/1/3/5/3/135338307/wonapukaweni_perirokami_siwufe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469126/normal_6025e21389679.pdfIn PDF document text
    • https://cdn.sqhk.co/vifekodilevi/8ghfUjc/vuriwepowawavotezup.pdfIn PDF document text
    • https://cdn.sqhk.co/lexuxeza/gialXhb/knight_of_swords_love_advice.pdfIn PDF document text
    • https://domisupufiz.weebly.com/uploads/1/3/5/3/135316273/jazonugiwifi.pdfIn PDF document text
    • http://rowowesofazov.medianewsonline.com/ropoxapu.pdfIn PDF document text
    • http://sevezor.scienceontheweb.net/10171500028.pdfIn PDF document text
    • http://sadovik.me/jodovebo7qvt2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485800/normal_60024ea76c64a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475563/normal_6047207422ecc.pdfIn PDF document text
    • http://premium-cinema.com/sir_duke_sheet_music2e1tr.pdfIn PDF document text
    • http://comp-arenda.site/is_gluten_free_stuff_bad_for_you60n0j.pdfIn PDF document text
    • https://cdn.sqhk.co/mumeriretepi/haZijC2/idle_highway_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/vopofuxo/cifQ3id/vujejuzuwux.pdfIn PDF document text
    • http://everydays.space/pevatokawizfvom.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450514/normal_5fd068517dd27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427091/normal_600c7f1023bdd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zizenatoxu.myartsonline.com/fundamentals_of_seismic_tomography.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010e3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E3E 5608 bytes
SHA-256: c08d01ada15cdfbc53af933f9bec5c1469796faf2cad8e704233b5e6ef864884
font_01_sfnt_off00012134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12134 10840 bytes
SHA-256: 001106e5f045b0b3fa37ba9878490f4d7344ecc075be4fcc7c63d92883c5ab2a
font_02_sfnt_off00014633.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14633 16148 bytes
SHA-256: 51babe3b44e703ca5a92278b053c112c5c116674d3b708c8e2cb3e4aa6bd9a04

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