Malicious PDF — malware analysis report

Static analysis result for SHA-256 80d0cf60f9ab8cbd…

MALICIOUS

PDF

82.1 KB Created: 2021-09-04 00:51:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 20bd06ec8bb262fd2227f8c0a855c759 SHA-1: 6aa592b835e613e0e397c626ecd96282a77283eb SHA-256: 80d0cf60f9ab8cbdc3b0daabab7d50a6275dadd6924e3705d197bc77d2eaef1c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a common PDF-based lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://drafthe.ru/uplcv?utm_term=canon+ipf670+scanner+manual PDF link annotation
    • https://gelblighting.com/userfiles/files/2947368928.pdfIn PDF document text
    • http://ampletrekking.com/userfiles/file/63976555368.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/7a5c082mf7gv484df4pejppfjr/nomovolupupo.pdfIn PDF document text
    • https://agrimal.pl/userfiles/file/retijubatakadoda.pdfIn PDF document text
    • https://masini-de-ambalat.ro/images/userfiles/nedozatukenajul.pdfIn PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf50834ade---fixifolukofomivusurefez.pdfIn PDF document text
    • https://www.engltg.com/wp-content/plugins/super-forms/uploads/php/files/fe52693c47876291b9934b49c79bf2da/kamefega.pdfIn PDF document text
    • https://trsbarriersdirect.com/wp-content/plugins/super-forms/uploads/php/files/trj0a4ount75sjk4spsmbeogik/rumagotofibelimaverabig.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/pt57odm4j43rdrlm70o1cumre3/femixunarudaliresenoji.pdfIn PDF document text
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073f722d251e---48929209418.pdfIn PDF document text
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/u3mf5h3lk5munoc30np2505bfb/jukegerepatagiradebabeto.pdfIn PDF document text
    • http://www.anglometais.com.br/adm/Editor/ckfinder/userfiles/files/novisozi.pdfIn PDF document text
    • https://hondamienbac.vn/userfiles/file/panituxizuvatonu.pdfIn PDF document text
    • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/161086f9718c57---nalejalulivojisetewem.pdfIn PDF document text
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ff18b8c4c5---tisibivosa.pdfIn PDF document text
    • https://ku4ysk-9lgp4y.com/contents/files/24746310380.pdfIn PDF document text
    • http://dblbtech.com/userfiles/file/38720792222.pdfIn PDF document text
    • http://ballmillfactory.com/d/files/19514051035.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/olpoo1l468s7ht1l77is8b6h0r/xudovamufodu.pdfIn PDF document text
    • http://seigyobannkaigaikikaku.com/ckfinder/userfiles/files/9690323537.pdfIn PDF document text
    • http://kamennykoberec.eu/editor_uploads/system/files/maxijasakewafavem.pdfIn PDF document text
    • http://fullcolorspandoeken.nl/userfiles/file/sixovezevomoguwe.pdfIn PDF document text
    • https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/160faf9e27999b---92055098016.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA66 17936 bytes
SHA-256: 78592ab396c4c8e18d0ca5be2a96cc0a3029614c8b78461186705abe35e6d53a
font_01_sfnt_off00010961.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10961 11012 bytes
SHA-256: 524d9bcdc000fe29c30ce9eb0fecec09ee83b767697e6662b7f74241858f73e8
font_02_sfnt_off0001230e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1230E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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