Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f8e8ff1eedbe7e3…

MALICIOUS

PDF

85.5 KB Created: 2021-06-27 20:29:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 5aecdf41a50bc38c009cb42cf02d5655 SHA-1: 92c2001ae5be415bee467262b5d140e0649c0607 SHA-256: 1f8e8ff1eedbe7e368ac036c3223720afd9d3657ed97a31d329d18b3a82be6cd
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links to external websites, many of which are hosted on compromised CMS uploads or disposable domains, indicating a link farm for SEO poisoning or malicious redirection. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, but the structure suggests it's designed to drive traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 5

  • 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 http://josephpowellfamilyreunion.com/clients/0/04/04c15d356d3082020e114f8c0300f46e/File/84967254196.pdf In PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160861dc3976f4---44846398356.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160786498075c1---gijidelewigikunufumivul.pdfIn PDF document text
    • http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d25219486ad---kezorosanive.pdfIn PDF document text
    • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/v4ebm7c9gjj435iqae2639csbt/26239670044.pdfIn PDF document text
    • https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/4927bab2904d931640d7e0b8d7add30c/fibalara.pdfIn PDF document text
    • http://nesthomes.in/userfiles/file/julefarebeporagimosis.pdfIn PDF document text
    • https://louvre.lv/res/wysiwyg/file/67458128217.pdfIn PDF document text
    • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160d62e269ef95---75681163388.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609d0bcc83786---sozagifo.pdfIn PDF document text
    • http://coinproject.com/userfiles/image/file/14623932262.pdfIn PDF document text
    • https://www.sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/16090505eeb5f9---mokimejifetebofa.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abc6169679a---96924117029.pdfIn PDF document text
    • https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d44394ebdb---75956866318.pdfIn PDF document text
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/2930ee7ac17133a7a61d6305de2318f6/roxejisu.pdfIn PDF document text
    • http://dodici12.ru/wp-content/plugins/super-forms/uploads/php/files/sj5esaakbqs87slmj0ubkmjgl5/wugonudunitoxorekuvuj.pdfIn PDF document text
    • https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/7k6pdutvep97vi13pk8rb0ubf2/52092915994.pdfIn PDF document text
    • https://cambodiaangkorhomestay.com/userfiles/file/fajijiw.pdfIn PDF document text
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160735bdf374da---75966022894.pdfIn PDF document text
    • http://18554080.com/userfiles/file/79166381905.pdfIn PDF document text
    • https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/bb00adf7bc981dc18e45646e09a99d03/lurajijeniravubaxazor.pdfIn PDF document text
    • https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/d0615850a5ab182f9ca33f86152e6704/85880952556.pdfIn PDF document text
    • https://www.anandtirth.com/wp-content/plugins/super-forms/uploads/php/files/94sfvr91lq7ov5ci4ciag5cr97/21824690342.pdfIn PDF document text
    • https://www.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/je758oruv56ialj2frafammg9g/gagivisunobejur.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=play+the+song+do+you+want+to+build+a+snowmanPDF 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_off0000ebd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000103ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103EC 11036 bytes
SHA-256: 5b5dc4e7ce897052e4210b7cacc80fbac9384ad345478255b5df5e066a474a34
font_02_sfnt_off00011d4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D4F 16680 bytes
SHA-256: 6f8315cf7447f5745fc0ff5e4df7f19b589545d9d6b1b51334ad86888e120388