Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6bc66f49e535b0b…

MALICIOUS

PDF

90.1 KB Created: 2021-07-01 14:43:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: cbe698610e24df24d4052391e7a8f487 SHA-1: 5fb4b876db8d258f89542a2882679537a923427a SHA-256: f6bc66f49e535b0b6b36dc9be5ffde38110d16a7d3f555f04f9803896d8f4a0e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites and other disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to phishing or malware distribution sites. The file's structure as a link farm on potentially compromised infrastructure supports a phishing or malicious redirection attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/k4omdal17ios253a45vbg9laip/80348946908.pdf In PDF document text
    • http://fullcolorspandoeken.nl/userfiles/file/zesiserajeritum.pdfIn PDF document text
    • http://dzbnf.com/upload/file///powuzizol.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/fg77pl0l527i276ucmt609nk66/54313974059.pdfIn PDF document text
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/gj64i8quqdtiq0tn3ev0pt6usq/wetexoronalujoredagawefer.pdfIn PDF document text
    • https://ka-base.no/images_content/file/kopawadikiridebi.pdfIn PDF document text
    • http://tnslib.net/userfiles/files/nowedebokonegitupokekapim.pdfIn PDF document text
    • http://beerskiboot.com/img/upload/file/vasarefofovawitusewajup.pdfIn PDF document text
    • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/d385941f443aeddf2d8bd167cc2d300f/1103635041.pdfIn PDF document text
    • https://boumqueur-edition.com/upload/fckeditor/file/takosekegelefuvawanures.pdfIn PDF document text
    • https://efnnma.org/files/file/kazuv.pdfIn PDF document text
    • http://titusrelay.com/clients/e/ef/ef304ccc03541e9e6382bef5f13b0a7d/File/50018388677.pdfIn PDF document text
    • http://manninareunion2012.com/clients/0/03/03b30fdf9aaeeba733afadbef254ff7b/File/59694242256.pdfIn PDF document text
    • https://travelstore.tn/userfiles/file/rikijazitefakiref.pdfIn PDF document text
    • https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/0dq9pmj7mup2966itpdn8socpr/18819498663.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160982ba09006c---xetajebowejuv.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160905987eb978---58875199757.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3515067c71---39714975495.pdfIn PDF document text
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b10b2347a1d---58043724970.pdfIn PDF document text
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/mhrq2aounrfe1m08ea9j7rs0d1/pazuwiladoluxinigudaxi.pdfIn PDF document text
    • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/16087fa17ea30a---10305100487.pdfIn PDF document text
    • https://nowbali.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/16081335fbdb3e---panigunewirewor.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fec0a99cd1---nowaxuvetizukawawo.pdfIn PDF document text
    • https://hfbee.tw/upload/ckfinder_temp/files/20210628051138.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/160aa315fc139a---45036725687.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=what+are+these+calledPDF 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_off0000fcea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCEA 18024 bytes
SHA-256: e1157344ebe614796020313d1c60d8d1007dd54f586550084b2345b531ec5ac1
font_01_sfnt_off00012c75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C75 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001448c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1448C 10144 bytes
SHA-256: 75a85a862ea9b2391810a3eab0490ff6d0f74631c1db5ea3a0eb337c2c80f8f2

Open this report in the interactive analyzer, or submit your own file for analysis.