Malicious PDF — malware analysis report

Static analysis result for SHA-256 718d061c53478cc4…

MALICIOUS

PDF

78.2 KB Created: 2021-03-25 11:31:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 843afdcfc8f88e844675522f8f50efe3 SHA-1: 7fc4e71255c04c8a75611197244ebcf371a2688d SHA-256: 718d061c53478cc4d2d13eddb0bf214eec392fdd7ec9b5f15f138e28e2fd26d5
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains or link farms, indicating a phishing or spamming operation. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to malicious sites or download further payloads. The document body, though heavily obfuscated, contains references to product names and technical terms, possibly as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • 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 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.
  • 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://jumiwimov.ru/aws?utm_term=box+istick+melo+60w+-+eleaf PDF link annotation
    • https://cdn.sqhk.co/nesorosuxim/jiqQmij/90100604912.pdfIn PDF document text
    • https://cdn.sqhk.co/juxezijafoz/yihiAV3/87813079185.pdfIn PDF document text
    • https://cdn.sqhk.co/gogojiranat/PehaWja/game_called_among_us_age_rating.pdfIn PDF document text
    • https://cdn.sqhk.co/wepunajexiju/CidZrjd/chocolat_trogneux_au_touquet.pdfIn PDF document text
    • http://vehicleusains.com/symbols_in_act_1_of_romeo_and_juliet6ii6e.pdfIn PDF document text
    • https://gibegijatu.weebly.com/uploads/1/3/5/4/135400332/vuwopunij-duxitis-kalaxa.pdfIn PDF document text
    • http://mamontov-net.cc/what_is_big_data_analytics_salarym684k.pdfIn PDF document text
    • http://daliadiago.com/disgaea_5_sage_guidefy4yc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382948/normal_601339877b82a.pdfIn PDF document text
    • https://cdn.sqhk.co/fanekizesedi/rjh2idX/gemumavepinezepa.pdfIn PDF document text
    • https://cdn.sqhk.co/bibikodazit/5Lljcja/54222513513.pdfIn PDF document text
    • http://shortsomfj.space/lonely_planet_sweden_ebook_free_downloadfewn2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450048/normal_60550059b8134.pdfIn PDF document text
    • https://cdn.sqhk.co/menodotitit/hupUbib/65625267140.pdfIn PDF document text
    • https://cdn.sqhk.co/piwizogir/Riijdij/balal.pdfIn PDF document text
    • http://kuwofadenokul.iblogger.org/kundalini_shakti_book.pdfIn PDF document text
    • https://sezibuginodeso.weebly.com/uploads/1/3/4/4/134470526/6f048a.pdfIn PDF document text
    • http://salestore.pro/chopsticks_song_sheet_music4vqfw.pdfIn PDF document text
    • https://cdn.sqhk.co/wimiwupo/lkmRDhf/dragon_ball_z_dokkan_battle_jp_hack_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/gimexigerub/mFqYAjj/24442579158.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://setimuduwimu.epizy.com/franz_kafka_the_metamorphosis_analysis.pdfIn PDF document text
    • http://nepafex.epizy.com/dwarf_fortress_steam_graphics_forum.pdfIn PDF document text
    • http://juromozupipoju.rf.gd/arrays_in_computer_programming.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f07d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF07D 5532 bytes
SHA-256: 14bb0a985edb397814a12e99d3e957c01c160481216f6b98851fca6f717758ec
font_01_sfnt_off00010366.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10366 12292 bytes
SHA-256: 13a5d3737adc0b62ec5f973d75b5325aaffdb046327369f5591a32f4d3cc6b47