Malicious PDF — malware analysis report

Static analysis result for SHA-256 44567bc5b1e0331a…

MALICIOUS

PDF

80.9 KB Created: 2021-09-18 20:05:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: c575da4be2c94355d244b5e4f1177069 SHA-1: 70b5853fe3ea468f9d320da3647251167cd1b732 SHA-256: 44567bc5b1e0331a50495653d114e725ed76808016d98a28fad0e9a546a1c08d
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ML classifier and ClamAV detection strongly indicate malicious intent. The PDF contains numerous external URIs and is identified as a link farm hosted on disposable domains, suggesting a phishing or malware distribution campaign. The presence of embedded URLs further supports the attack pattern of directing users to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://allytemp.ru/uplcv?utm_term=baseball+clash+download PDF link annotation
    • https://hotelmitrutarija.com/uploaded/files/ginunuwesit.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/52251842170.pdfIn PDF document text
    • http://ideal-site.ru/userfiles/file/luxozuligazewisix.pdfIn PDF document text
    • http://technimexvn.com/images/ckeditor/files/99918316150.pdfIn PDF document text
    • http://cegled.varosom.hu/userfiles/files/87817504193.pdfIn PDF document text
    • http://decoworld.in/dayafter/uploadimages/newsimages/file/26249698280.pdfIn PDF document text
    • http://mmckno2010.zkosuchdol.info/files/56197946375.pdfIn PDF document text
    • http://iscelenie.info/files/file/paliragekomete.pdfIn PDF document text
    • http://abnicum.ru/files/file/domapefasafewifopara.pdfIn PDF document text
    • https://pierreseche.fr/userfiles/file/rirofasijomaxinaxos.pdfIn PDF document text
    • http://canhtoanland.com/upload/files/58416711106.pdfIn PDF document text
    • http://goldmustang.ru/files/files/vavaguberemomilevavog.pdfIn PDF document text
    • http://visusmarble.com/images_upload/files/fogexad.pdfIn PDF document text
    • http://danchrisjewelry.com/userfiles/file/lideloregipobobiv.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131fa43abc26---jalevudidumaberedasorog.pdfIn PDF document text
    • https://www.afoa.org.ar/backend/ckfinder/userfiles/files/80783850087.pdfIn PDF document text
    • http://phantasos.org/userfiles/file/91932767768.pdfIn PDF document text
    • http://chipublichouse.com/ckfinder/userfiles/files/sesotinirajesu.pdfIn PDF document text
    • http://hoadondientu-ptp.vn/images/ckeditor/files/6962656194.pdfIn PDF document text
    • https://gencatakan.com/upload/file/12742422003.pdfIn PDF document text
    • http://nirmalapublicschoolerumely.com/userfiles/file/janaributinejoxilos.pdfIn PDF document text
    • https://serrechevalier-skifun.com/imagesfile/dogumibidesem.pdfIn PDF document text
    • https://tranhdaquyhn.com/uploads/news_file/95639650653.pdfIn PDF document text
    • http://ranjitabiswas.com/userfiles/files/dobigimufi.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_off0000d5a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5A0 10456 bytes
SHA-256: 8bfbf681f0881a635ee85b085c8a291c54b57b4775616b4700af1356517d69dc
font_01_sfnt_off0000ed65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED65 18472 bytes
SHA-256: cd3ccae803db359d456f23d42608f4431652991d998da29d1d493f8ab925b00d
font_02_sfnt_off00011dbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DBF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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