Malicious PDF — malware analysis report

Static analysis result for SHA-256 4452ec845432e739…

MALICIOUS

PDF

82.7 KB Created: 2022-04-20 14:06:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: fe062d7f8a2c18d163728fabfe36a140 SHA-1: d651fbb575532d932b87f338dbe8c74fabfdb943 SHA-256: 4452ec845432e739bcba41538405e597138a7681c895e6eee86dd0715f79b25c
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm designed to redirect users to potentially malicious websites. The ClamAV detection and ML classifier further indicate malicious intent. While no scripts were explicitly extracted, the presence of numerous external links points towards a phishing or malware distribution attempt, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://loheb.co.za/YmrXLWy8?keyword=the%20cube%20method%20for%20strongman%203%20pdf PDF link annotation
    • https://jojixujodu.weebly.com/uploads/1/4/1/2/141251922/4802008.pdfIn PDF document text
    • https://xupazipul.weebly.com/uploads/1/3/5/3/135325103/cd960f.pdfIn PDF document text
    • https://gedevoliritigit.weebly.com/uploads/1/3/4/6/134686631/xivovowufixege.pdfIn PDF document text
    • https://tipipiteker.weebly.com/uploads/1/3/0/7/130775441/f134aa6d4dffdaa.pdfIn PDF document text
    • https://xazojufez.weebly.com/uploads/1/3/4/6/134639306/28f7642eff.pdfIn PDF document text
    • https://jatazuleb.weebly.com/uploads/1/3/4/6/134662889/daneba.pdfIn PDF document text
    • https://wesotapaxo.weebly.com/uploads/1/3/4/4/134488604/1037691.pdfIn PDF document text
    • https://universitecentrale.net/uploads/FCK_files/file/93184528443.pdfIn PDF document text
    • https://xakasevam.weebly.com/uploads/1/3/4/5/134509313/d6a9f285.pdfIn PDF document text
    • http://aburobocon2019.mnb.mn/uploads/files/42301942248.pdfIn PDF document text
    • https://konoxitewe.weebly.com/uploads/1/3/4/4/134494736/28c567448f827.pdfIn PDF document text
    • https://tinuxapesizagi.weebly.com/uploads/1/3/4/4/134440362/diterozuz.pdfIn PDF document text
    • https://wyslijpaczki.pl/app/webroot/files/userfiles/file/99440372883.pdfIn PDF document text
    • http://forglory.cz/ckfinder/userfiles/files/pemanuximosajaji.pdfIn PDF document text
    • https://kusevekusaf.weebly.com/uploads/1/4/1/3/141348410/mureni.pdfIn PDF document text
    • https://newtrichur.com/userfiles/file/jitolifemejumez.pdfIn PDF document text
    • https://orangevelodrometrail.fr/img/uploads/files/gimuwimuligalilepobezi.pdfIn PDF document text
    • https://nukokefefaselug.weebly.com/uploads/1/3/4/8/134874449/zatilubozuge.pdfIn PDF document text
    • https://retotanenumu.weebly.com/uploads/1/3/4/0/134017544/javuwajekabujafejujo.pdfIn PDF document text
    • https://elitstroycraft.ru/source/file/11678694389.pdfIn PDF document text
    • https://katolafafesol.weebly.com/uploads/1/3/4/4/134479470/ridajazowepexolasi.pdfIn PDF document text
    • https://kabosasano.weebly.com/uploads/1/3/5/3/135398154/vukunajawa_rudimexotusek_patab.pdfIn PDF document text
    • https://bikekifo.weebly.com/uploads/1/3/5/3/135304891/fanevufobuvona.pdfIn PDF document text
    • https://junetinovifadi.weebly.com/uploads/1/3/0/9/130968968/vejosifevaxezi.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_off0000da74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA74 11304 bytes
SHA-256: ec870e46187944e50a31361bc1c304820995229296f842d3374a5f57cf5008d8
font_01_sfnt_off0000f477.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF477 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010c89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C89 17508 bytes
SHA-256: 24613c76a2304ac88038b83c7365ebdd703174bdc78e5b75a141359e00dfe672