Malicious PDF — malware analysis report

Static analysis result for SHA-256 09cacf3ffd30002b…

MALICIOUS

PDF

99.6 KB Created: 2021-09-01 01:42:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 63b287fc155d25184113194fb386947e SHA-1: b78846d9b0b8cf72900c5850242d40bcc434dbaf SHA-256: 09cacf3ffd30002b5ffd3bd5c6e99103a998c51e3d69a444c467c6da0a1e5e66
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF is classified as malicious by ML and ClamAV, exhibiting characteristics of a payment redirection lure. It contains numerous links, many pointing to compromised WordPress upload storage, suggesting an attempt to host and distribute malicious content. The document body is unreadable, but the heuristics strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9880

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
  • 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.
  • 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 http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9820205d95---40090078580.pdf In PDF document text
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606f754d45dae---wotewanovopu.pdfIn PDF document text
    • http://eko-inwest.eu/upload/file/5802301088.pdfIn PDF document text
    • http://bbmeti.it/userfiles/files/58480783993.pdfIn PDF document text
    • http://la-roofers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b346a951bb5---33370382280.pdfIn PDF document text
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee28e796867---zabesemevujaridepaduxab.pdfIn PDF document text
    • https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/m120n6mq1q1qk2o7kji7m7ailq/15429422166.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/aerqpj7um9548ghfjuvvtl9kai/51114940927.pdfIn PDF document text
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/026d7bbc52eca14db0dc862f6a60da0e/bipuzurobavez.pdfIn PDF document text
    • http://rainbowcaterers.in/userfiles/file/37786828244.pdfIn PDF document text
    • https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/7q58joso1f0p6fsv5lm32mc5dr/2625376890.pdfIn PDF document text
    • http://uniquehotelsolutions.com/files/others/nalajilamuzake.pdfIn PDF document text
    • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16079fb4555c1c---10705370252.pdfIn PDF document text
    • https://amenajarisiconstructii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160878b9ed58b7---90213232033.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609066f56f445---40497169021.pdfIn PDF document text
    • http://uni-farm.pl/ckfinder/userfiles/files/71022279096.pdfIn PDF document text
    • https://rowadalbyt.com/userfiles/files/14282454201.pdfIn PDF document text
    • http://greenplanetnepal.com/userfiles/file/tazit.pdfIn PDF document text
    • https://rozgarnetwork.com/ckfinder/userfiles/files/wopaxidanebufesuzubusaj.pdfIn PDF document text
    • http://global-gypsum.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608491b2c7537---rukarokid.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/160783c541e533---73454047204.pdfIn PDF document text
    • https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/f4f79b16133723f04b917238d2995964/juwene.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b9f75210f3---nijogime.pdfIn PDF document text
    • https://ochronaskory.pl/pliki_user/File/20551852311.pdfIn PDF document text
    • http://gagutp.com/sa_upload/userfiles/file/20210721073147.pdfIn PDF document text
    • http://www.caslyn.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160847c01ee900---42169934536.pdfIn PDF document text
    • https://www.swissfillon.com/wp-content/plugins/super-forms/uploads/php/files/472b1233e6e7b798e60d7875176b346f/nezegatitarepewepinex.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=free+instagram+likes+and+followers+generatorPDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011e5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E5D 18416 bytes
SHA-256: b511773da426a5e719b6404fe97e51df950c352937e4751bc60144a5855c34c8
font_01_sfnt_off00014e3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E3D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00016654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16654 10852 bytes
SHA-256: 8880fe0bdde89672a935ac21e3db9f8338a7e28e9dad7e72880d0f66a595289c

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