Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaf2ea3a297dcfc9…

MALICIOUS

PDF

85.4 KB Created: 2021-07-25 03:37:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 5ac4c5ef661d56e5b60f5f29439ba44e SHA-1: 8d6da4fd62c0df72a1aebb44d2a47f2aab186d35 SHA-256: eaf2ea3a297dcfc9d7635b02f777c7586358b67d3376dd56f6a8262088ce5c4f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised WordPress upload directories, suggesting a tactic to host malicious content. The presence of external URIs and link farms indicates an attempt to redirect users to potentially harmful sites for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a0411bebb4b---37082495034.pdf In PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/q8sqge93s165qoci04bsj0rist/39373580089.pdfIn PDF document text
    • https://oncallanatomist.org/ckfinder/userfiles/files/zewaletorelevebadiwoj.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a67efeac60a---85642984793.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/160e600181e560---81938763372.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078ad30c0e0d---86774091501.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b6d01026448---19565842912.pdfIn PDF document text
    • https://hyundaia.ru/userfiles/file/80339190636.pdfIn PDF document text
    • http://automozg.by/upload/editor/files/derukupuru.pdfIn PDF document text
    • https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/8bf50b02d2f5592fc782658524ee3716/37864048172.pdfIn PDF document text
    • http://deauville.ru/files/file/75433287666.pdfIn PDF document text
    • http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/3f5f26784fa627f15342cc6e7133e9c8/22850354873.pdfIn PDF document text
    • https://taevlingar.se/images/pages/file/vubido.pdfIn PDF document text
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/uu4lgmkm26h8vvgdvdf2m796sn/42063717081.pdfIn PDF document text
    • https://www.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/bdjqg4g8n2680d809s5fsqv4qd/kiwodix.pdfIn PDF document text
    • http://opusincertum.it/userfiles/files/38695615455.pdfIn PDF document text
    • https://cowichanseniors.ca/userfiles/file/66578893199.pdfIn PDF document text
    • http://henca.com/files/details/file/47877933616.pdfIn PDF document text
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608317f577579---rodedavuli.pdfIn PDF document text
    • http://teplolux72.ru/upload/file/64341110470.pdfIn PDF document text
    • https://realestateconnect.us/wp-content/plugins/super-forms/uploads/php/files/ucsr4qt61s2apv550v0r8o0og6/64941577104.pdfIn PDF document text
    • http://kurier48.pl/files/userfiles/file/54764367253.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=codashop+hack+apk+2020+no+passwordPDF link annotation
    • 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_off0000e937.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE937 10696 bytes
SHA-256: c3e11e2808f309f5d00805b24e0b197189ec447be0f633df8fc72772417b9755
font_01_sfnt_off000101ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101CE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000119e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119E0 16896 bytes
SHA-256: e313dcf58fe2be1d26e505f5eb0adbb10c78cdb7a5f3a0abc91c8a56a42b7d6c

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