Malicious PDF — malware analysis report

Static analysis result for SHA-256 98b2486d9c8b7525…

MALICIOUS

PDF

69.4 KB Created: 2021-02-26 03:48:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 2f7214d3f66a232708f2fec7e734bb3e SHA-1: 3e304603d44aea4354c331d07f6fe466bd575c1b SHA-256: 98b2486d9c8b752570c695c3a57a923aab1346bc6545a8044954ba3fae2313dd
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF contains numerous embedded links, many of which point to disposable domains and are flagged as part of a link farm. One critical heuristic indicates that PDF links lead to known malicious redirector infrastructure, specifically citing 'https://crophysi.ru/award?keyword=what+is+the+meaning+of+araby+in+bengali'. This suggests the document's primary purpose is to redirect users to malicious sites, likely for phishing or to download further malware.

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://crophysi.ru/award?keyword=what+is+the+meaning+of+araby+in+bengali In PDF document text
    • http://hookup682.site/duxijasebunasemuzysrl2.pdfIn PDF document text
    • http://revilokepudidu.mygamesonline.org/netters_anatomy_flash_cards_online.pdfIn PDF document text
    • http://zoluwofemofuper.sportsontheweb.net/how_to_set_a_ge_self_cleaning_oven.pdfIn PDF document text
    • https://vusuranozaxo.weebly.com/uploads/1/3/4/0/134012668/e5cdf3cbf.pdfIn PDF document text
    • http://bumasujofoj.getenjoyment.net/focusrite_scarlett_solo_ableton_live_lite.pdfIn PDF document text
    • https://cdn.sqhk.co/togodawexu/fjegfo8/78329175838.pdfIn PDF document text
    • https://nagejezesalu.weebly.com/uploads/1/3/0/8/130874580/pebirasalij-pidutoluda.pdfIn PDF document text
    • https://pigumetazemebet.weebly.com/uploads/1/3/0/7/130775485/pebukurakemoj.pdfIn PDF document text
    • https://cdn.sqhk.co/ragojagef/eijhfhe/fnac_shadow_candy_jumpscare.pdfIn PDF document text
    • http://devazabekodum.iblogger.org/wivetulazevagitedovazajul.pdfIn PDF document text
    • https://cdn.sqhk.co/xoguvamev/28Tjehi/34641530027.pdfIn PDF document text
    • https://cdn.sqhk.co/gabazumad/QNictja/flip_runner_mod_apk_1._1._12.pdfIn PDF document text
    • https://gumotamilo.weebly.com/uploads/1/3/5/3/135319527/7201947.pdfIn PDF document text
    • http://tepugorotewole.medianewsonline.com/diablo_3_switch_2_player_one_console.pdfIn PDF document text
    • http://zeboxagekej.sportsontheweb.net/petonevuzup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d3c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C6 5436 bytes
SHA-256: 775080e809a4e114cd93501cb79de72917e849e5493e200e1279e7e0b44225fe
font_01_sfnt_off0000e631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE631 10008 bytes
SHA-256: 1df83a6bcaa46e9fb9b22d49ab32a6aa8a50bcec1ab2aec8ed90290013ecfbda

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