Malicious PDF — malware analysis report

Static analysis result for SHA-256 8098deb04b126bf4…

MALICIOUS

PDF

600.2 KB Created: 2021-06-26 17:45:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 4f08876b31eac8db3e06f621a9abe7bf SHA-1: 9e5f23684ed21dc26fb4d4d5f24ce08de1d223cc SHA-256: 8098deb04b126bf4a7b860ad8b5a5c8cae2c97cdd1bc582829990bf26397f944
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file exhibits multiple lures indicative of an advance-fee scam or payment redirection, including 'Fake invoice / payment lure', 'Advance-fee lottery/parcel scam lure', and 'Payment redirection / bank-detail change lure'. It contains numerous links pointing to compromised CMS upload storage, suggesting an attempt to redirect users to malicious content. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7757

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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 http://xn--vb0b83rba554gca.kr/page_data/file/20210510072828.pdf
    • https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/1v8u4ep3cmgtfqcnmj6ic6jpqj/60114103408.pdf
    • http://landia-print.com/pdir/file/pedikerunigiladadepiz.pdf
    • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/14288b05822b630de16fc627c8b3dc6b/65442354416.pdf
    • http://www.majoriscambio.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607d3cbba25e2---71254916175.pdf
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/f7ec7e7356690953c10569e2ba62d969/97653915921.pdf
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/1645d4e1ea16e8c19de8b1fb90850ac5/3065638693.pdf
    • https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/1609222b01cb5e---zinovaviboz.pdf
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608746722bc92---zekukara.pdf
    • https://www.wflorlando.com/wp-content/plugins/super-forms/uploads/php/files/9a799c90d57caa38a1845e9960fb91e0/14820613483.pdf
    • http://musikpark-live.de/userfiles/file/zavenetimifamiroti.pdf
    • http://mywayrtk.info/userfiles/file/15944096009.pdf
    • http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f9d68f1c8a---bepowas.pdf
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160980407c8487---vifuruxizupedalonaja.pdf
    • http://fedime.org/imagenes/82348049884.pdf
    • https://addsfly.com/userfiles/file/44297942297.pdf
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/160774a62bb9a4---ninolilagu.pdf
    • http://math-talk.kr/wp-content/plugins/super-forms/uploads/php/files/rg3scih4205ba1jv8d516gq38s/30280771446.pdf
    • https://srp-galabau-rostock.de/wp-content/plugins/super-forms/uploads/php/files/b2ruk4p527n5dv93qk0au5fgnc/zaxenojidegafajegofipapef.pdf
    • https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be1922492c0---26840364668.pdf
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/av1dee9p8sdgmiqi76oj7i53n6/dezuximixowolug.pdf
    • http://altelaw.com/uploads/image/file/lagifapa.pdf
    • https://eberli-medical-supply.ch/upload/file/bitugugowako.pdf
    • http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f54fb90cb6---kokasugafe.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=ca+final+sfm+nov+2007+suggested+answers
    • 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_off0008e93e.bin
334811708b9178b2cc0af5f128bb8e04c17c8ba1ea2a2a570e91e78ddb3906b1
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E93E 11272 bytes
font_01_sfnt_off000903a8.bin
b52bacabf6ba0e3e369e9ae27856a9e258dedd69f10a207503e85646d5890c12
pdf-font-stream PDF embedded font (sfnt) at offset 0x903A8 19344 bytes
font_02_sfnt_off000937c7.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x937C7 16792 bytes