Malicious PDF — malware analysis report

Static analysis result for SHA-256 624fccbea1a0e689…

MALICIOUS

PDF

84.4 KB Created: 2022-05-03 07:07:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-29
MD5: 83c2febdda81ee2a0848878119aff017 SHA-1: c29cd715937ec6420525fff8763a879efc6612ff SHA-256: 624fccbea1a0e689444cefd6e08c6edd7fc89ba8b1760e179c342e3010911527
214 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 8

  • 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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://colod.co.za/YmrXLWy8?keyword=the%20fallen%20state PDF link annotation
    • https://berekimitavogi.weebly.com/uploads/1/3/1/4/131452750/f486b.pdfIn PDF document text
    • http://nuovartea.eu/userfiles/files/94358679972.pdfIn PDF document text
    • https://xamabovow.weebly.com/uploads/1/3/4/6/134674320/3155173.pdfIn PDF document text
    • https://pixavegabub.weebly.com/uploads/1/3/5/3/135307945/7773676.pdfIn PDF document text
    • https://dovedesomubax.weebly.com/uploads/1/3/4/4/134487211/kavip.pdfIn PDF document text
    • https://bapumelu.weebly.com/uploads/1/3/7/5/137502396/ziratekosowosogu.pdfIn PDF document text
    • https://zowajapizuxazo.weebly.com/uploads/1/3/0/9/130969341/pixofewukesuba.pdfIn PDF document text
    • http://nature-revive.org/files/file/41541867275.pdfIn PDF document text
    • http://belspelen.nl/admin/kcfinder/upload/files/vagarogamewozipawadu.pdfIn PDF document text
    • http://ues-rb.ru/themes/ues-rb.ru/files/sipevotaluwowufugujifeg.pdfIn PDF document text
    • http://nrtz.fundacja-spektra.pl/upload/files/5378054736.pdfIn PDF document text
    • https://rizomoxus.weebly.com/uploads/1/3/4/5/134589692/4854101.pdfIn PDF document text
    • https://nefawuwezogixo.weebly.com/uploads/1/3/1/1/131163734/b037c5e430be22.pdfIn PDF document text
    • https://alibaba-cave.com/userfiles/file/54684166247.pdfIn PDF document text
    • http://uniradioweb.info/userfiles/file/wefolijojijajaxefusur.pdfIn PDF document text
    • https://www.fsps.co.th/kcfinder/upload/files/63883941976.pdfIn PDF document text
    • https://vesizolakaz.weebly.com/uploads/1/3/4/3/134333528/futarepatelij.pdfIn PDF document text
    • https://vinasimex.com/uploads/file/60772712678.pdfIn PDF document text
    • https://burojupudigi.weebly.com/uploads/1/3/5/9/135990051/zuzinilog.pdfIn PDF document text
    • http://elmakoleji.k12.tr/public/kcfinder/upload/files/mopopisexomowovi.pdfIn PDF document text
    • https://wolfgang-photography.com/userfiles/files/jinese.pdfIn PDF document text
    • https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/6fbe1edbe30e591f6dbe4d6e2fb3b6d4/lunekazesijibefamikadeli.pdfIn PDF document text
    • https://mtdind.aicsmindia.org/ckfinder/userfiles/files/19148020837.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE529 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fd3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD3F 9960 bytes
SHA-256: 3a20098de7eb9c71de148005f11b80c94024b85bfabb91a47e62f0e10ba4416d
font_02_sfnt_off00011341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11341 17988 bytes
SHA-256: e71fe51b8607b543a1a2bbe426c12180d9ac3c3e49c7cea83e8d5e08959c805a