Malicious PDF — malware analysis report

Static analysis result for SHA-256 5524ff7fd9f7a1cd…

MALICIOUS

PDF

79.3 KB Created: 2022-04-22 00:05:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-19
MD5: 06fc17a26d8665ca60f752f35c11e027 SHA-1: 79724f7bf70ed360fac95a936be21f670b0769b7 SHA-256: 5524ff7fd9f7a1cd5dc2f1628a1008d7c902ec9eb56caa9a84ec952c5d2dcead
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 7

  • 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.
  • Travel-support phone-number stuffing scam high SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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://xedafiwiwez.weebly.com/uploads/1/3/2/3/132302754/387841.pdf In PDF document text
    • http://topspeed4wd.com/ckfinder/userfiles/files/53088671723.pdfIn PDF document text
    • http://av-jet.ru/userfiles/file/kegumitevoreroxi.pdfIn PDF document text
    • https://iskoruma.com/upload/ckfinder/files/33528183755.pdfIn PDF document text
    • https://nigovazimosa.weebly.com/uploads/1/3/4/6/134636686/4732578.pdfIn PDF document text
    • https://lokudepapina.weebly.com/uploads/1/3/5/3/135325929/lekafominu.pdfIn PDF document text
    • http://collegium-connect.nl/ckupload/files/bugozas.pdfIn PDF document text
    • http://banglenhospital.com/UserFiles/File/muziwanito.pdfIn PDF document text
    • https://vegebawijinewer.weebly.com/uploads/1/3/2/7/132740558/3354526.pdfIn PDF document text
    • https://govepemifowen.weebly.com/uploads/1/3/4/3/134372812/1b4e1.pdfIn PDF document text
    • https://kenkochaya.com/user_data/ckfinder/files/41196971120.pdfIn PDF document text
    • https://sipavokipepino.weebly.com/uploads/1/3/4/3/134330850/7cf5c1c932b.pdfIn PDF document text
    • https://mojipakubi.weebly.com/uploads/1/3/4/6/134679558/4268019.pdfIn PDF document text
    • http://kleinschadenexperte.de/userfiles/file/66827165156.pdfIn PDF document text
    • https://dimagusideno.weebly.com/uploads/1/4/1/3/141374986/zogototet-deraw-defuwole-nejozaja.pdfIn PDF document text
    • http://kustari.net/userfiles/file/sitadazeralu.pdfIn PDF document text
    • https://tuyendung.tlipgroup.com/upload/images/files/xemifedal.pdfIn PDF document text
    • https://mufaguzesevulet.weebly.com/uploads/1/3/2/8/132814956/nipukaguzul_fezosemu_vuwemusuz.pdfIn PDF document text
    • http://ekstelekom.com/userfiles/file/25574894367.pdfIn PDF document text
    • http://studiodebiaggi.eu/userfiles/files/26014221647.pdfIn PDF document text
    • http://jovanrajsic.net/storage/files/weleletat.pdfIn PDF document text
    • https://wurotifaji.weebly.com/uploads/1/3/4/3/134315076/0ec70c756.pdfIn PDF document text
    • http://bjqyms.com/filespath/files/20220413214718.pdfIn PDF document text
    • https://fecuq.co.za/YmrXLWy8?keyword=what%20ink%20does%20hp%204500PDF link annotation
    • 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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0000cff5.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000cff5.bin)
🗂 Part of campaign: iskoruma.com 3 samples

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFF5 10760 bytes
SHA-256: b4127e6dd17dd177c3318e5940e822685a021859d5283dcbe338931b64d3519e
font_01_sfnt_off0000e8bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8BF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000100d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100D1 17512 bytes
SHA-256: eb8d71bcbae76d54769d27050d3775eccf8052574ee3982b9423079969ea5140