Malicious PDF — malware analysis report

Static analysis result for SHA-256 44579074cbd8146f…

MALICIOUS

PDF

191.6 KB Created: 2021-12-01 20:15:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: c0148bf5a5f5d4f16a579bd245cd71f6 SHA-1: 9d9e94aa0042cbe12fa4ffcf8c87e5dfee6b0bb6 SHA-256: 44579074cbd8146f3468547d98dc37dfa01558c949b39b798852b0e6510a9c3f
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to disposable domains, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to lure users to malicious sites, likely as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9602

Heuristics 5

  • 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 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://garglob.ru/uplcv?utm_term=akron+children%27+s+hospital+child+life+internship PDF link annotation
    • https://hearing-outlet.com/uploads/files/202110232043318098.pdfIn PDF document text
    • http://colegiosantarosa.com/uploads/imagem/file/92616945890.pdfIn PDF document text
    • https://insureavisitor.com/userfiles/file/jagomukelegomafapogarino.pdfIn PDF document text
    • http://weorderfood.com/uploads/files/bawupitulagedazebu.pdfIn PDF document text
    • https://okud-istra.hr/userfiles/file/nutopemokiteju.pdfIn PDF document text
    • https://snqrsl.quebec/upload/editor/file/64908634693.pdfIn PDF document text
    • http://novelinternationalschool.com/ckfinder/userfiles/files/sulipajiduwuvitokuwogenu.pdfIn PDF document text
    • https://hkparkkonutlari.com/image/files/14834613444.pdfIn PDF document text
    • http://coiffurenais.com/userfiles/file/zizexabinizukinal.pdfIn PDF document text
    • http://onnetsolution.in/userfiles/file/30940013276.pdfIn PDF document text
    • https://buddhaart.in/userfiles/file/tavozaretakaj.pdfIn PDF document text
    • https://nusbetaja2.com/contents/files/81514490907.pdfIn PDF document text
    • https://aayams.com/userfiles/file/97543147734.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/16173f28276fc4---xifepejipomapubazisasu.pdfIn PDF document text
    • http://lionsmarsala.it/userfiles/files/dodipu.pdfIn PDF document text
    • https://miltonmattox.com/userfiles/file/dugagil.pdfIn PDF document text
    • https://windfreeklima.com/upload/ckfinder/files/83917200178.pdfIn PDF document text
    • http://anhbanglaw.com/userfiles/file/sakawobeb.pdfIn PDF document text
    • http://sswjeans.com/files/58288992937.pdfIn PDF document text
    • https://technoarc.net/userfiles/file/moxosakelibumumikogaji.pdfIn PDF document text
    • http://ambartakip.net/belgeler/file/19008805036.pdfIn PDF document text
    • http://fese.in/ienupdimages/images/files/kavumunulupunifos.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_off00028fae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28FAE 10824 bytes
SHA-256: ed5ac9002eb6d96d0ab83e71406890eaf1b0f6e5fcdc80665f52d309095cd266
font_01_sfnt_off0002a89d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A89D 18308 bytes
SHA-256: c0c0a10d039cbb7fd006318e281f2c61a1742e99d845f434e523a03a0fbafa25
font_02_sfnt_off0002d829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D829 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336

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