Malicious PDF — malware analysis report

Static analysis result for SHA-256 1967dbca20d8d8a6…

MALICIOUS

PDF

70.5 KB Created: 2021-09-03 19:49:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 8f217250c5dc962ddb6abdd3de145547 SHA-1: b253cb5b01dfc27b0c2eaf2930e94aa9105368e9 SHA-256: 1967dbca20d8d8a645cd07f16e856b53dd679b980142b617be0b39737e5148a6
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. It contains numerous external links, many pointing to compromised WordPress sites, suggesting an attempt to redirect users to malicious content or download further payloads. The PDF_IMAGE_LURE heuristic indicates it likely presents a screenshot to obscure clickable elements.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9837

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 70 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://wastran.ru/uplcv?utm_term=compacting+factor+test+lab+report+pdf PDF link annotation
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607b1bebe5107---37699256014.pdfIn PDF document text
    • http://gistys.com/userfiles/file/80288923795.pdfIn PDF document text
    • http://zgkimsteszew.pl/img/upload/files/mawagaliseludajakuj.pdfIn PDF document text
    • http://tuanayapim.com/rsm/files/nojilugorubozimakara.pdfIn PDF document text
    • http://tfe-design.dk/userfiles/file/kujel.pdfIn PDF document text
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/e7a1a4ef0a8fadc2ac420612454342be/jumetuxogelikuzi.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a0eb5757b48---74209852969.pdfIn PDF document text
    • http://arcadia6465.com/clients/f/fc/fcac8d81e62e7f23ed02b02243def538/File/piridixibikifuxabawa.pdfIn PDF document text
    • http://agrobud.net/uploaded/file/wixejuzesut.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160913e27a97af---20893558361.pdfIn PDF document text
    • https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/7b8hi0e5tle410h0a6r6qvhmc7/44702225800.pdfIn PDF document text
    • http://fabienneblavier.be/upload/files/80579377623.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e502eca157a---jinuzuj.pdfIn PDF document text
    • http://hotararicedo.ro/files/files/53550199320.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/lu7vf9ag68psf84g6peb49a6v7/zekoxofese.pdfIn PDF document text
    • https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/c8fviq4knc3k47q7e3jdml8jmi/61746033679.pdfIn PDF document text
    • http://aviatechinform.ru/sadm_files/71997941118.pdfIn PDF document text
    • http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16071aa641dde0---jilonis.pdfIn PDF document text
    • https://ratco-hardware.com/Ups/files/vibofikategudiwa.pdfIn PDF document text
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/2ce945f36e4814d0509bc3ff32774d68/juvilujizugalirivuxapu.pdfIn PDF document text
    • https://alakharia.com/public_html/userfiles/file/jelivojiwibaja.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/kpidlo6qvmjho0rkvm3qgbi6j9/44676895225.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/63fd80141aa29169b13dbf1da48a38aa/88862316426.pdfIn PDF document text
    • http://vanhacollection.com/images/files/kipamedim.pdfIn PDF document text
    • http://www.fonfe.com/uploads/files/puxitekevizawepiwuviri.pdfIn PDF document text
    • https://laznia-radom.pl/userfiles/file/virovagurovexano.pdfIn PDF document text
    • https://onecre.com/images/content/files/73875989489.pdfIn PDF document text
    • http://asfalon.com/__files/file/93504806550.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_off0000b79b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB79B 11132 bytes
SHA-256: fba99cb090f798c4e29ff24246a8e0e2d6c587f1c2274ec54720c97ffe117f6c
font_01_sfnt_off0000d12b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD12B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e93d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE93D 14304 bytes
SHA-256: 332b13ee8a2b073291daf1203b623419c497bd7d7191af0e0a156cf1c2d98e50

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