Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a0e4e968988d9c6…

MALICIOUS

PDF

86.7 KB Created: 2021-06-30 20:29:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9bb84cbaa747bf25910374210bed6aef SHA-1: 10e487c3ffdc1e037191f65f53a49ea72540f5a3 SHA-256: 0a0e4e968988d9c6a2070662b807ec458ce4c3a2530a2aff385a2f2c5ff394ea
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it likely serves as a phishing lure or a distribution point for malware. The file contains numerous external URIs and links to compromised CMS uploads, suggesting it is designed to redirect users to malicious content. The presence of multiple distinct hosts and UTM parameters further supports its role as a link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://smidgel.ru/uplcv?utm_term=motion+rate+120
    • http://project-lovcen.me/userfiles/file/88951725710.pdf
    • https://ikitellirezistans.com/upload/files/30748551380.pdf
    • http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160770114ee7d5---tisazepupuvupoguvomukakez.pdf
    • https://rocksoliddesigns.biz/userfiles/file/tazizopasowumukowiv.pdf
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084e2ce11a3e---zizagilezibe.pdf
    • https://www.ogblfrontaliers.fr/wp-content/plugins/super-forms/uploads/php/files/7ufa7vfnlb0ban3m4ufrjk1vvq/maluguzixofa.pdf
    • http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/aqeubrnoko9bi6bf3h0jkbf9m2/28897377766.pdf
    • http://poiskvod.ru/images/file/jewotadiw.pdf
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/iaoa68dchac0o4ieim9ptg3607/91952264846.pdf
    • http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b2a1314994---15930645631.pdf
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16070a37cf22e9---movisivi.pdf
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/07b0f4b325a5c76a73ff301c679e4d0d/sumisibikinosumasedixubuv.pdf
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d38a739286---fosurozifura.pdf
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/5540061affcee7938431b4b36b2e187c/21540473451.pdf
    • https://mbamantra.com/ci/userfiles/files/potanotisumexome.pdf
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160989e62728ed---36165265841.pdf
    • http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/d2ca56fe26a249c812042bee6b5d53a2/98646568806.pdf
    • https://www.propertyfilevault.com/wp-content/plugins/super-forms/uploads/php/files/a2a688be2fdc17070b2bc99101ec8008/gedarugeg.pdf
    • http://fluidearthconcrete.com/userfiles/file/kebediritisari.pdf
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16094aa47af139---nezikovujirigasun.pdf
    • https://arerp.kr/data/file///46524387926.pdf
    • https://iescolumbus.org/wp-content/plugins/super-forms/uploads/php/files/6564af0d5205749b9ee087874277e5c7/xuvejofemu.pdf
    • https://razdolle.by/wp-content/plugins/super-forms/uploads/php/files/llgdnei8hvotk1jl85t5lmnc24/bipijolurowarama.pdf
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/cb73ba0a42bb1e6116a6b3e212452055/17138842035.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eef5.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF5 16792 bytes
font_01_sfnt_off00010707.bin
8a9c826140eb0d3d400249b392cdb81a445daaae4922b38497494dc1ffa1c6ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10707 18024 bytes
font_02_sfnt_off000136d9.bin
7edc1ad1897cda8377850dbfe0fa2ff4b1538d543abd39250e068bcd74d73fe8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x136D9 10172 bytes

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