Malicious PDF — malware analysis report

Static analysis result for SHA-256 552dfdcaff3a9cd2…

MALICIOUS

PDF

72.6 KB Created: 2022-04-08 10:35:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-20
MD5: 6c485ec60ff58fc7a0a6d73d2dccaa85 SHA-1: 7c80e6a4c32c85723273d979979abecafd1dca2b SHA-256: 552dfdcaff3a9cd2476bf67c14308f641233b002fbfca105ef7b15ac9f31dfce
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://norin.co.za/YmrXLWy8?keyword=ejercicios%20operaciones%20combinadas%20fracciones%202%20eso%20pdf PDF link annotation
    • https://miwofovewunot.weebly.com/uploads/1/3/4/8/134873206/jikolutapudupan.pdfIn PDF document text
    • http://reputesystems.com/app/webroot/uploads/files/zaxedigarasivolurogok.pdfIn PDF document text
    • http://charmingcurls.se/upload/file/78534350682.pdfIn PDF document text
    • https://zabemukud.weebly.com/uploads/1/3/4/6/134614305/sagiraweluba.pdfIn PDF document text
    • http://studioghittigargnano.com/userfiles/files/pemudegumak.pdfIn PDF document text
    • https://emtracing.net/userfiles/file/37047557464.pdfIn PDF document text
    • https://jf-orvalho.pt/userfiles/file/bonebome.pdfIn PDF document text
    • https://rufijaduruki.weebly.com/uploads/1/3/4/3/134311805/8dc0e662cd1.pdfIn PDF document text
    • http://kp-technik.cz/ckfinder/userfiles/files/fekixiz.pdfIn PDF document text
    • https://lozofatogil.weebly.com/uploads/1/3/0/7/130739213/waridenav.pdfIn PDF document text
    • http://www.dreamstoreonline.es/ckfinder/userfiles/files/labemuromeg.pdfIn PDF document text
    • https://zerimesatevig.weebly.com/uploads/1/3/4/8/134879836/lizukilosuzef_lidibaj_fatubizukelisog.pdfIn PDF document text
    • https://vijativu.weebly.com/uploads/1/3/4/5/134597759/e8adac13f2c46ef.pdfIn PDF document text
    • https://xamelanaf.weebly.com/uploads/1/3/5/3/135331914/4213247.pdfIn PDF document text
    • https://gadetuzajuvi.weebly.com/uploads/1/3/4/8/134850054/xetigobelu.pdfIn PDF document text
    • https://rixotojar.weebly.com/uploads/1/3/0/9/130969533/mijatoxu.pdfIn PDF document text
    • https://bogemokized.weebly.com/uploads/1/3/4/3/134386998/lofibuzop.pdfIn PDF document text
    • https://m-isc.com/userfiles/file/madarisoti.pdfIn PDF document text
    • http://spartapr.com/images/upload/file/2088709844.pdfIn PDF document text
    • https://nenodomamik.weebly.com/uploads/1/3/4/0/134095987/gimawifoxubeninon.pdfIn PDF document text
    • https://ruwevupezo.weebly.com/uploads/1/3/4/0/134013147/tikojukuxanid_suligupigebaro_turorib.pdfIn PDF document text
    • https://badukixekuxa.weebly.com/uploads/1/3/5/3/135388400/musobobevatuwat.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0000b6cc.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000b6cc.bin)

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b6cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6CC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000cede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEDE 16648 bytes
SHA-256: 6c61922f7a57f5c76b1ff4f2bffa66738c22e77817b8e0ac2c8e3ab4d9386084
font_02_sfnt_off0000f8ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8ED 11012 bytes
SHA-256: 3e29d4edbad9da3e1ab8310cda366eb436667b1907ef0d8df515cc76060556cb

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