Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfd539c9ea0fca91…

MALICIOUS

PDF

78.7 KB Created: 2021-02-28 12:47:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b0cacf762704a6b7cc7191ef271d3cc3 SHA-1: 77e41f6d15655e5e86959754609503c960fef573 SHA-256: dfd539c9ea0fca91477b5408a6b520f8db6becf59b6596d0c8a71ee726154750
186 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains a large number of external links, many hosted on disposable domains, indicating it functions as a link farm. The primary purpose appears to be SEO manipulation or directing users to potentially malicious content hosted elsewhere. No scripts were extracted, but the embedded URLs are the main indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/wix?keyword=economics+second+edition+answers PDF link annotation
    • https://jodaxirijiv.weebly.com/uploads/1/3/0/7/130776114/fa7301.pdfIn PDF document text
    • https://cdn.sqhk.co/kuniremolu/ihhaJl5/3076682725.pdfIn PDF document text
    • https://befuvabesuwab.weebly.com/uploads/1/3/0/7/130740391/b370f.pdfIn PDF document text
    • https://gitufigekuxos.weebly.com/uploads/1/3/4/6/134634758/130a1416ae7cf2.pdfIn PDF document text
    • https://cdn.sqhk.co/rizijuwet/jghfcjf/97357497386.pdfIn PDF document text
    • https://bepixumute.weebly.com/uploads/1/3/5/3/135302933/755755.pdfIn PDF document text
    • http://rejemezurufoveg.mywebcommunity.org/the_unbearable_lightness_of_being_subtitulos_espaol.pdfIn PDF document text
    • http://powerpoint4you.ru/street_fighter_5_apk_mob._org0c3bh.pdfIn PDF document text
    • https://cdn.sqhk.co/lajoroteb/CuZ7gjm/spongebob_sponge_on_the_run_full_movie_dailymotion.pdfIn PDF document text
    • https://cdn.sqhk.co/libavesonon/sidFje0/bunopigifizurufowo.pdfIn PDF document text
    • https://cdn.sqhk.co/vanewano/5Pchagt/freestyle_xtreme_voucher_code.pdfIn PDF document text
    • https://s3.amazonaws.com/savifin/nationwide_pet_claim_form_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/mepibatorozux.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/63503075883.pdfIn PDF document text
    • https://cdn.sqhk.co/jarogofef/8Hjbihi/tic_tac_toe_neon_glow_uptodown.pdfIn PDF document text
    • https://nozijuga.weebly.com/uploads/1/3/4/6/134698325/puduvamoji-sovanusasizofeb-dalomawi-madifexuw.pdfIn PDF document text
    • https://cdn.sqhk.co/loxepafigav/KieonGP/black_friday_hp_laptop_deals_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/janawezexoj/dgdicie/homescapes_coin_hack_2020.pdfIn PDF document text
    • http://fisareboveda.getenjoyment.net/99017937370.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_off0000f7c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C9 5100 bytes
SHA-256: d4cabc8f5ef4620f0e3f39c164b54baa829e30bb84253ceba9cb91037f0fd438
font_01_sfnt_off0001091f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1091F 10656 bytes
SHA-256: 064e5722612d04e4cb0064e612af5dbf6d7c40ac69d5eac173ad1216647edee2

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