Malicious PDF — malware analysis report

Static analysis result for SHA-256 d45e0ddd5b77513e…

MALICIOUS

PDF

84.3 KB Created: 2021-08-01 09:07:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: d27b008b02b0f90b112ead7e11accc3c SHA-1: 1f2434efa2d26106817ba9d300f584614b9b9c5a SHA-256: d45e0ddd5b77513e44a95507199f92529bb6df16f0a4338ea097b2696dcf3e1c
216 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exhibits characteristics of a payment redirection lure, aiming to trick users into believing there are new or changed bank instructions. It contains numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to obscure the ultimate destination. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or financial fraud.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://pixomot.ru/uplcv?utm_term=routing+number+td+bank+bc+canada PDF link annotation
    • http://ledson.ru/upload_picture/44777535020.pdfIn PDF document text
    • https://paidionresearch.com/userfiles/files/33689397958.pdfIn PDF document text
    • http://matstravel.ru/userfiles/file/81906320939.pdfIn PDF document text
    • https://angkorphotographyguide.com/userfiles/file/vuzekuduneji.pdfIn PDF document text
    • https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/2b0858c1a89331dac3c5e300b236ed20/78147879697.pdfIn PDF document text
    • https://yukkumpulgroup2.com/contents//files/8334119952.pdfIn PDF document text
    • https://cowichanseniors.ca/userfiles/file/ramawiwobetilonudaga.pdfIn PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160b28c14e0677---21278045663.pdfIn PDF document text
    • http://josephfellerlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/25199301140.pdfIn PDF document text
    • http://schodylux.pl/userfiles/file/ruzitopa.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6952050b90---6017622073.pdfIn PDF document text
    • http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c02f283bd88---galojosifujitibetowe.pdfIn PDF document text
    • https://ancoraeducacion.com/images/vupejenevalanamodew.pdfIn PDF document text
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160ba94a67d49a---91294675345.pdfIn PDF document text
    • https://patoman.ro/ckfinder/userfiles/files/rimezuvirotuwokifabex.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/4eabe000365600b4f7c062c977b8a526/nukajolelisipezi.pdfIn PDF document text
    • http://katyababash.com/images/uploads/file/45316351757.pdfIn PDF document text
    • http://namthangbasaltstone.com/uploads/image/files/rifululixotujasinowezetem.pdfIn PDF document text
    • http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/987e5e7ce1be189e60da5c5d7cb469ac/keliwilimad.pdfIn PDF document text
    • http://beytarimcilik.com/admin/editor_resim/file/92867185953.pdfIn PDF document text
    • https://hanyauntuktesting.com/contents//files/64877642588.pdfIn PDF document text
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16105db4a27d9f---pudevo.pdfIn PDF document text
    • http://xboxheerlen.nl/userfiles/file/luniragevomedakuladegemip.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_off0000e6a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A9 16776 bytes
SHA-256: c7f3eff6ad49a1ac8edd70b6f4b7331570b3bd2fa008a8bf04ef88a2d827c609
font_01_sfnt_off00011299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11299 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012ab0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AB0 10876 bytes
SHA-256: 2b52b4054b6a0e867fbc1fa1dd27d220319bc4c864b5005009147d5d773cd687