Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4fc7d90cfd9953e…

MALICIOUS

PDF

541.3 KB Created: 2022-02-08 07:57:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-02
MD5: 075e88b9beef00e98a3b24f61da48a54 SHA-1: 1b50a03f1aa45dc39b919494338020be863363e2 SHA-256: a4fc7d90cfd9953e276f27e5942e2737a302bcd1cafc1e03b943089a7b2f9c8d
104 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3991

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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://podar.co.za/XSRYdR1H?utm_term=soundcloud++album+art PDF link annotation
    • https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/a1fd3008f3a4526e6d3988944411793b/gevolidogipobavemuwumo.pdfIn PDF document text
    • http://spineportal.de/files/file/fonomipuvem.pdfIn PDF document text
    • http://konemara.hu/userfiles/file/mejarexakivovuba.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1613207f8c0380---16442364313.pdfIn PDF document text
    • https://87tunghia.com/upload/file/44600359473.pdfIn PDF document text
    • http://hnfond.cz/storage/file/88263790703.pdfIn PDF document text
    • http://doxetrilinh.com/media/ftp/file/44523202450.pdfIn PDF document text
    • https://tnmkor.com/FileData/ckfinder/files/20210710_88AA6C65A199D39A.pdfIn PDF document text
    • http://xn----ctbguteehkho5h.xn--p1ai/ckfinder/userfiles/files/rekewulalexiruloriwukol.pdfIn PDF document text
    • http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/5516a8038e767f5e52977555cda5701d/29305489237.pdfIn PDF document text
    • http://betheaskssd.com/flash/betheaskssd.com/file/risisubekifobi.pdfIn PDF document text
    • http://373113.linker.tw/files/wuwukuworasepopusi.pdfIn PDF document text
    • http://alltechsro.cz/files/36994635616.pdfIn PDF document text
    • https://accounting789.com/ThImg/file/dulatazuloxu.pdfIn PDF document text
    • https://ciar.vn/uploads/image/files/gadofanedisu.pdfIn PDF document text
    • http://the100voicesofgospel.de/fichiers/newsletter/file/32813276364.pdfIn PDF document text
    • http://taxicityplus.ru/userfiles/file/jatinib.pdfIn PDF document text
    • https://dotcomtravelegypt.com/userfiles/files/rukerunojuxufese.pdfIn PDF document text
    • http://cmuniontravel.com/userfiles/files/72059522745.pdfIn PDF document text
    • http://uekekb.ru/!upload/files/63340611794.pdfIn PDF document text
    • http://brlairport.com/images/file/18068398299.pdfIn PDF document text
    • http://lionsmarsala.it/userfiles/files/17707306864.pdfIn PDF document text
    • http://solamsys.com/userData/board/file/25316507541.pdfIn PDF document text
    • https://afritransport.com/app/webroot/files/file/26464946515.pdfIn PDF document text
    • http://pokorny-podlahy.cz/UserFiles/File/tapiv.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 extracted file (stream_005_off000821bf.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (stream_005_off000821bf.bin)

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000821bf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x821BF 18428 bytes
SHA-256: 1ade4134591b9ad29889517182c7f6f7ee48d9c69be18edb727b7c65960dfd24
font_00_sfnt_off0007c40c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C40C 10456 bytes
SHA-256: 172a49238978f908b9b6732424967f7e807286ad43a61b3794a26bd8979e2296
font_01_sfnt_off0007dbcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DBCB 28384 bytes
SHA-256: f54c8ff203bfc3901686cf503ac3fae868e0ca212c689a35633c32a8ced9eb0c
font_03_sfnt_off00083fd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83FD6 3904 bytes
SHA-256: c6c10cea0369b93260f076899d69ae8286ea9bcfea0a41e6bf1c2a89f32978f6
font_04_sfnt_off00084ea4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84EA4 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9