Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc9194e04c368007…

MALICIOUS

PDF

83.5 KB Created: 2021-09-07 06:03:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 0f2ff31ea2fbbc8ced8719c81058c6d6 SHA-1: 4325ba785986e4a65d0564a8b5e023f3c3e3167a SHA-256: cc9194e04c368007ff3953853eed32342e21b1a5684d7f4ee26f155229cbfb35
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF contains embedded JavaScript and numerous external URIs pointing to compromised WordPress sites, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to redirect users to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://crewmak.ru/uplcv?utm_term=meridian+energy+pen+w-912+user+manual PDF link annotation
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/2g0rmbvthgebv3rdmsjsisli98/nipakobe.pdfIn PDF document text
    • http://btc-ltd.com/upload/file/funufowonetunav.pdfIn PDF document text
    • https://lescourailleurs.com/upload/editor/file/muxudokuzeg.pdfIn PDF document text
    • https://x-software.cz/data/file/jijejiwosa.pdfIn PDF document text
    • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160bba2a2a58cd---nosaxuk.pdfIn PDF document text
    • http://globalfeedindustry.com/upload/files/suxupasuza.pdfIn PDF document text
    • http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/c19d4e025e1e9ead32c9ac78eb7fe77d/57121418651.pdfIn PDF document text
    • https://geneolock.com/locktactyuma/userfiles/file/mugitenarupaf.pdfIn PDF document text
    • http://mail-ex.net/userfiles/file/noxonidasilosukebemupuwir.pdfIn PDF document text
    • http://dmscsmartlifeblog.com/userfiles/files/xosomifubasatune.pdfIn PDF document text
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082a477ddcc9---29977103911.pdfIn PDF document text
    • https://skazkavdom.com/wp-content/plugins/super-forms/uploads/php/files/7fc5b6811d7ce22f3e15d88568864c7c/45277034109.pdfIn PDF document text
    • http://amandamaitland.com/images/file/26809372419.pdfIn PDF document text
    • https://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/hvlgvn1nrclges8fo9la1m9ge3/64793710469.pdfIn PDF document text
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a3e3a3862f6---xopebuvo.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/16082dbcad43a9---gatixudagivolakopafamavi.pdfIn PDF document text
    • http://www.creativitaecomunicazione.it/js/lib/ckfinder/userfiles/files/18041559269.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c6a20977e0---farojabofixegiza.pdfIn PDF document text
    • https://irrisyst.eu/files/file/vexowufotagotigibipedoj.pdfIn PDF document text
    • https://mfdesign.hu/files/file/77678799423.pdfIn PDF document text
    • https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/f3d07c6bd43382b0421c7e1bc9a088ea/merosazusexifasukin.pdfIn PDF document text
    • http://a2hgghk.handylover.com/upload/files/ribobiguwew.pdfIn PDF document text
    • https://jahanchart.ir/data/files/file/nibexamakajipedezivolejut.pdfIn PDF document text
    • http://hkalc.com/userfiles/9149651666.pdfIn PDF document text
    • https://theatresaucinema.fr/uploads/file/bakivubavadojarasaro.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_off0000de0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE0C 11184 bytes
SHA-256: 0662dd5ac827db1ae2e171f34fdada704d3fbf7930fba94d313b8217757fe9ab
font_01_sfnt_off0000f828.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF828 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001103a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1103A 18456 bytes
SHA-256: b7856de36662079791bffb418b46a45405eb660978674e1fed031c31f8d80b98

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