Malicious PDF — malware analysis report

Static analysis result for SHA-256 445f90d7654ea584…

MALICIOUS

PDF

98.1 KB Created: 2022-04-06 12:34:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 1414e1a2beeae400fe7d0cc651cd3137 SHA-1: 3a21d7dbc9ef92de0d120ec5919613576f60fe6c SHA-256: 445f90d7654ea5843ca2a7e69fe4424459f3ccfb2278d37c4af3a096a50087e3
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for Pdf.Phishing.Trojan. The presence of a large number of external links, many hosted on disposable domains, indicates a link farm designed to direct users to potentially malicious content. While no scripts were explicitly extracted, the PDF structure and link farm suggest an attempt to lure users to phishing or malware distribution sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ragaz.co.za/YmrXLWy8?keyword=what%20does%20an%20mla%20format%20paper%20look%20like PDF link annotation
    • https://seruvukajobal.weebly.com/uploads/1/3/4/4/134479042/kosufobolodota-puzenipupibizaj-kuroxevomor-nujelimel.pdfIn PDF document text
    • https://xn--fct8ml6mwue.tw/uploads/files/79913282719.pdfIn PDF document text
    • https://zekawumili.weebly.com/uploads/1/3/4/4/134403966/237c303817.pdfIn PDF document text
    • https://gebawifu.weebly.com/uploads/1/3/1/4/131483167/5938533.pdfIn PDF document text
    • https://adm-consult.band-cm.com/userfiles/files/2538957834.pdfIn PDF document text
    • https://serelikiwep.weebly.com/uploads/1/3/4/4/134476809/wugigunejotironilo.pdfIn PDF document text
    • https://frigosztufi.ro/ckfinder/userfiles/files/givakukin.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/buroxiguronejudisidijo.pdfIn PDF document text
    • http://crislbd.com/public/admin/assets/ckeditor/kcfinder/upload/files/37779840012.pdfIn PDF document text
    • https://zopopalolidipe.weebly.com/uploads/1/3/4/5/134500843/5511018.pdfIn PDF document text
    • https://fetevemukimagon.weebly.com/uploads/1/3/4/8/134896640/7e6e0.pdfIn PDF document text
    • http://www.zssever.cz/admin/ckeditor/kcfinder/upload/files/59498750922.pdfIn PDF document text
    • https://pesopipuni.weebly.com/uploads/1/3/2/3/132303043/8445551.pdfIn PDF document text
    • http://busto-wl.gattinonimondodivacanze.it/themes/userfiles/files/padiwuzagipefu.pdfIn PDF document text
    • http://stonestudio.pl/files/upload/file/8716634951.pdfIn PDF document text
    • https://webkapper.nl/ckfinder/userfiles/files/14570942980.pdfIn PDF document text
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/162383fe033934---66359271673.pdfIn PDF document text
    • https://velixojuf.weebly.com/uploads/1/4/1/3/141332153/bilodas.pdfIn PDF document text
    • https://colegiumaniucarei.ro/ckfinder/userfiles/files/18678379311.pdfIn PDF document text
    • https://sgpm.krakow.pl/aaeventy/kcfinder/upload/files/54080181267.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_off00011a89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A89 17848 bytes
SHA-256: fd9f0a596836aa4b88f1739042e47af88b78a66961fa1a7b21381bddf3ad2db6
font_01_sfnt_off00014909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14909 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00016120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16120 10848 bytes
SHA-256: 6e77a470b40136b810514d71c85a8c76d78b41eb3ea6a0074fc55ebfec86de88