Malicious PDF — malware analysis report

Static analysis result for SHA-256 d98c7486b5270ef4…

MALICIOUS

PDF

67.7 KB Created: 2021-04-05 13:52:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7885d193297c5aec1b6572dc6ecdfb96 SHA-1: 2c0e17fc7ecaa351467a491134203df741a00545 SHA-256: d98c7486b5270ef401285c8eac030ef7db9ba0196977bdd76ebb3b2e242ff0ed
184 Risk Score

Malware Insights

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

The PDF contains multiple embedded links that redirect to external websites, with at least one URL identified as a known malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to contain metadata related to service manuals, suggesting a lure to trick users into clicking the malicious links.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/wix?keyword=case+tv380+service+manual In PDF document text
    • https://cdn.sqhk.co/vifejoneses/hcjdhii/ganovejuf.pdfIn PDF document text
    • http://bugosegu.scienceontheweb.net/10132871431.pdfIn PDF document text
    • http://bonboxstudio.com/how_many_calories_in_starbucks_coffee_frappuccinorlgp1.pdfIn PDF document text
    • http://sdorovie-sustavi.xyz/fejalujalepor9p70.pdfIn PDF document text
    • https://cdn.sqhk.co/foseziwate/gggcpib/asphalt_8_airborne_perfect_nitro_triggered.pdfIn PDF document text
    • http://smartcoin.design/how_to_make_cool_science_experimentst5m4z.pdfIn PDF document text
    • https://cdn.sqhk.co/mesodimeduje/ifnnjhC/84821231402.pdfIn PDF document text
    • http://lorakuze.sportsontheweb.net/plan_de_alimentos_para_diabetes_tipo_2.pdfIn PDF document text
    • https://cdn.sqhk.co/bogonelemid/plhjAaC/zorigowaxek.pdfIn PDF document text
    • http://tramlaweq.online/fopewezolizebobogaga750.pdfIn PDF document text
    • http://xuwuvewisin.mypressonline.com/make_google_search_homepage.pdfIn PDF document text
    • http://jigikujed.scienceontheweb.net/icecream_reader.pdfIn PDF document text
    • https://cdn.sqhk.co/gujowaxexag/eo1iVhb/kobugunoxemomaxizowum.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vunonam.atwebpages.com/converting_slope_intercept_to_standard_form_worksheet.pdfIn PDF document text
    • http://gemovimuwopete.atwebpages.com/farejigiwu.pdfIn PDF document text
    • http://kikukuvikato.myartsonline.com/6160576210.pdfIn PDF document text
    • http://nimanexobubibub.onlinewebshop.net/jozoxer.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA87 5408 bytes
SHA-256: 19c6c10daf14c42b24f3b9e09d40e217b7a6e68ccf3cf62d3a9fb8d91bf9b569
font_01_sfnt_off0000dcce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCCE 10436 bytes
SHA-256: 38d0656283f4dc47cee385f6ccb12b36bfb3d5b380be5538169b387fa08ab596

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