Malicious PDF — malware analysis report

Static analysis result for SHA-256 face21500d25b99d…

MALICIOUS

PDF

108.8 KB Created: 2021-06-27 05:06:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 8fd0cd654161b96de1acc994a4508494 SHA-1: bf7f8a7a33b150544020933e10db954a15bd45e9 SHA-256: face21500d25b99dd61e6f7bfc0330bb87a39a4476de1786f2181dca5ae20e1b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics and ClamAV as malicious, indicating a phishing or trojan distribution attempt. The file contains numerous links pointing to compromised websites, likely serving as a link farm to distribute malicious content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9868

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://coretry.ru/uplcv?utm_term=in+a+food+chain+of+grassland+ecosystem PDF link annotation
    • http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160874d5c5a843---tuwivekudetidokevu.pdfIn PDF document text
    • http://slp72.com/clients/7/7b/7b902bee17765b19ebdde6030f24742d/File/35960775926.pdfIn PDF document text
    • http://aryajob.com/user_upload/file/91782227346.pdfIn PDF document text
    • http://alexhoffordphotography.com/temp/files/file/sakilus.pdfIn PDF document text
    • http://arci-mp.fr/admin/File/21456648457.pdfIn PDF document text
    • https://eobliecky.sk/userfiles/file/famabikagavoxokemikafu.pdfIn PDF document text
    • https://livre-art.com/ckfinder/userfiles/files/vuwuxelebalewobagunor.pdfIn PDF document text
    • https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/kdn7a7lprh9sba1l6o46qq57na/sikupokoji.pdfIn PDF document text
    • https://accounting789.com/ThImg/file/6683444291.pdfIn PDF document text
    • https://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/ac05a53eca0b16affd379c62f0063ca8/jokevesinupeb.pdfIn PDF document text
    • http://modnyi-buket.ru/uploads/files/pekipoludewowomuzemele.pdfIn PDF document text
    • http://www.redactordecontenidos.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160a0aab47d001---kewitunibagodojakagevi.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/16072116713cd8---44348843612.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/sm4vo3ogepqgq73p1btn1irub2/josurademid.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076203bd2802---60616996969.pdfIn PDF document text
    • https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/a9ac528e0344325ec6faf953ec02d6b7/sutupabobuponekozuxad.pdfIn PDF document text
    • http://stressmanagement-karriere.de/userfiles/file/95383873272.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b4b3d2ca528---xeweligumepizamifu.pdfIn PDF document text
    • https://digireg.se/upload/vugozukikisu.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/e3e7de4d56e8f2c5c746c17ffa8b1d97/karesenutan.pdfIn PDF document text
    • https://lakeshoresmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/8b0n5cv5u2plmeasge0qs1n7h4/riwobage.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160754da15208a---fojufelexapatuberod.pdfIn PDF document text
    • http://berallebags.com/UploadFiles/FCKeditor/20210516234818.pdfIn PDF document text
    • http://sb-78.ru/files/file/2365357374.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 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_off00012d59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D59 18664 bytes
SHA-256: 1f74609f9eb2e5391c9fd22970cae300bd84b79bf8a06a37bc1cda4279b9fd5c
font_01_sfnt_off00015e6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E6C 10988 bytes
SHA-256: c01673cdab51150ad1fa564e5817748674f44ff37cf523087130cb109b326bde
font_02_sfnt_off0001778d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1778D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00018f9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18F9E 16164 bytes
SHA-256: fd494554c7a7a2c4488382a78096c535ff133766c7221992be4f6a58596b2467

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