Malicious PDF — malware analysis report

Static analysis result for SHA-256 af76a2066a5365df…

MALICIOUS

PDF

82.3 KB Created: 2021-06-30 20:00:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 5f0166f421536f9dbfe865b8dc94a4e5 SHA-1: 18bcaface497f13577a5b5ec1c51ccd09aa946f6 SHA-256: af76a2066a5365df355720a560c5904a0480e5f3c424f680812d4518e0113c7a
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting a link farm designed to redirect users. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates the document likely instructs users to open a password-protected archive, a common tactic to bypass gateway scanning and deliver malware. While no scripts were directly extracted, the ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/8f8040e052b57ea956669f2847ff8da8/poberedanosepedunesugi.pdf In PDF document text
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/5qi0fpts7bspikt10bojg4ovtp/lubawe.pdfIn PDF document text
    • http://security-m.jp/tool/images/file/47668163170.pdfIn PDF document text
    • https://winston-woodward.com/wp-content/plugins/super-forms/uploads/php/files/2618fa1900223e071ee053de4697610b/kavibovakamakeg.pdfIn PDF document text
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/04753ee637ce8cbbf5bae1ff8d613c2e/labiwolesumazos.pdfIn PDF document text
    • http://stlnsk.ru/uploads/file/49679887104.pdfIn PDF document text
    • http://cobansut.com/userfiles/file/fatej.pdfIn PDF document text
    • http://aceonlinementors.com/userfiles/file/wadaguledepenegudo.pdfIn PDF document text
    • https://yocarbroker.com/upload/ckfinder/files/wutijadewot.pdfIn PDF document text
    • https://www.americansummercamps.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b0cdd966b5---belajexitol.pdfIn PDF document text
    • https://outsourcedbackoffice.co.uk/wp-content/plugins/super-forms/uploads/php/files/25e32bacc278b15d1f3cfd60908f7ebf/bajakupijamegigukezad.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a08013deb72---pebagepub.pdfIn PDF document text
    • https://thetitangroup.ca/wp-content/plugins/super-forms/uploads/php/files/820dd4fb45050ccb5456a984a8bf010f/52066715849.pdfIn PDF document text
    • https://stallion-international.com/userfiles/file/gosemejamodonogetupewejum.pdfIn PDF document text
    • https://www.tctnanotech.com/wp-content/plugins/super-forms/uploads/php/files/0f27efc0afd7c9020e028316046f48c9/lexetokupoxafedon.pdfIn PDF document text
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/7lgrd2sssakmhshh9ctri162d1/fafamepisirurusabo.pdfIn PDF document text
    • http://dancingstarsgreenwich.net/clients/1/10/10f73e4104fe6082999c9b722aa65ba2/File/zegatekovumovutesogoxup.pdfIn PDF document text
    • https://hasekei.jp/userfiles/file/73876054464.pdfIn PDF document text
    • http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/16093b2b331cdc---mezisozerebodus.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f04d03a561---resuvu.pdfIn PDF document text
    • http://bjhtdszdh.com/v15/Upload/file/2021629210333003.pdfIn PDF document text
    • http://ngpsusa.com/wp-content/plugins/super-forms/uploads/php/files/dif1ep4fhs9a2ta9n70dka5quv/80377379428.pdfIn PDF document text
    • http://accessprecision.com/userfiles/file/kiletovuwanelegojom.pdfIn PDF document text
    • https://thejasmineway.net/wp-content/plugins/super-forms/uploads/php/files/e8nmejrk8nhk816ld6a64mpuls/39214109559.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=cubis+gold+2+free+online+no+downloadPDF link annotation
    • 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC62 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f479.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF479 10908 bytes
SHA-256: 742d29edcce180e52cd2f2dd576d43e266d6909d1ac61e5895bd7e2b1a815919
font_02_sfnt_off00010db6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DB6 17592 bytes
SHA-256: 1cd4662a2a49ca9645cbca85fb6259614b325aa293ef7c8221b38e6bd2813e7c

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