Malicious PDF — malware analysis report

Static analysis result for SHA-256 170a2428c8df8c2b…

MALICIOUS

PDF

94.7 KB Created: 2021-06-30 03:43:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: fbd6b8ea82a8a45c006ec7d6bb87e16f SHA-1: 053e89da048d0e5c66e883a3088f962a01e6aef6 SHA-256: 170a2428c8df8c2bf6b1f5f781eb7f49a21699db167184a3aa3e86835b561c6b
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external links, many pointing to compromised WordPress sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a link farm designed for SEO manipulation, likely to host phishing pages or distribute further malware. The embedded JavaScript is a common method for initiating malicious actions within PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9786

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/7etba0s7agfuhjbvoo7g3755pf/37611741072.pdf In PDF document text
    • https://p87.hu/files/kuvikivadawenaf.pdfIn PDF document text
    • https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4a1d44942b---98429748609.pdfIn PDF document text
    • http://studiosimonepantaleo.it/userfiles/files/vagebojoxiwigutisilujar.pdfIn PDF document text
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160911a93931f2---16077669625.pdfIn PDF document text
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/icds1nog60lifn2oavi5la4muo/90128826611.pdfIn PDF document text
    • https://jennysbooks.com/wp-content/plugins/super-forms/uploads/php/files/61ca0ff0e6f9b227a1c5bd96af83bf5c/34647021127.pdfIn PDF document text
    • https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/46670c8e3f37947f41a5e7d9eae96418/bezaromamupinuwuwugebazi.pdfIn PDF document text
    • https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/brplmr6rm1lhjrh6sg0fc8h8k7/46916261383.pdfIn PDF document text
    • https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/5s1h0llfro58a492jo990spah9/73727281556.pdfIn PDF document text
    • http://ildongwire.com/userfiles/file/30026714006.pdfIn PDF document text
    • http://to-kajihan.net/js/upload/files/dumoxonilexuzugale.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bca895d5571---8063829085.pdfIn PDF document text
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/1f20c453575fe9167890debf7ca4bcfc/gorilarisakurutulalas.pdfIn PDF document text
    • http://www.abcklima.hu//data/editorfile/49186413405.pdfIn PDF document text
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/jp77h02s79mn27lqg827hvd927/54844052711.pdfIn PDF document text
    • https://rebel-guitars.com/wp-content/plugins/super-forms/uploads/php/files/982d78c267c6bd4f61b9d2e72d46322e/97586795208.pdfIn PDF document text
    • https://remoteworkerclub.com/wp-content/plugins/super-forms/uploads/php/files/2f5a395ce931df30ffc4b5b217d3ba48/89371910826.pdfIn PDF document text
    • https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/45c09b90952a6f63bac546a17d071fc9/34331125897.pdfIn PDF document text
    • http://miraesusan.com/ckupload/files/nemekuvodixufaruzugodora.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160878368f2fa8---xafufotirabuvogoterijina.pdfIn PDF document text
    • http://clasesholandes.com/userfiles/file/tubaparowunej.pdfIn PDF document text
    • http://dpsszczytno.pl/photo/file/tafefeji.pdfIn PDF document text
    • https://www.pal-kont.hu/wp-content/plugins/super-forms/uploads/php/files/d28534d7cc0eac912c11c4d70a9a90a1/pafotoru.pdfIn PDF document text
    • https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/ec97b46aa2bba034dcf5b58f34b5315e/dekenofizowikewevibevov.pdfIn PDF document text
    • http://ketoanantamhcm.com/uploads/files/jelavofodif.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=perpetual+light+shine+upon+herPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE5B 20524 bytes
SHA-256: 1c6f69d0ee412adc36914a89c170854961c2d1ddec430357deaaf2538f27dce0
font_01_sfnt_off000111e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111E0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000129f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129F7 10632 bytes
SHA-256: cf51b3c9702ed1145dfece9647d759798e5c3e5ef4ec4079d5a1b2daf0643380
font_03_sfnt_off00014235.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14235 16452 bytes
SHA-256: d7c27cfd8297cb09c50514c674d392be0029fe1488976abe7f985dff251f5ad0

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