Malicious PDF — malware analysis report

Static analysis result for SHA-256 679c2ec0d6837e23…

MALICIOUS

PDF

89.9 KB Created: 2021-06-26 04:14:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 9a2243e444358717b38ef843cffa72f5 SHA-1: 6d07342dd55cf6c90c64d5f7c0f9b3247045bab2 SHA-256: 679c2ec0d6837e239faee0f6d109cdb7be591ac51ce7b12c56686a02661eeea0
236 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of an advance-fee scam and a payment redirection lure, as indicated by multiple high-severity heuristic firings. The document likely aims to trick the user into believing they need to change payment details or claim a prize, leading them to malicious links. While no scripts were explicitly extracted, the presence of numerous embedded URLs and the nature of the heuristics strongly suggest a phishing or financial fraud attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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.
  • 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.mearesandassociatesllc.com/siteuploads/editorimg/file/16928708175.pdf In PDF document text
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/72afc8011d68851c8fbae327d4b0b218/muxiragatexovejuzikar.pdfIn PDF document text
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/cf942144650224f131e2495d215195e2/gixifekub.pdfIn PDF document text
    • http://mp-hd.de/data/aktualnosci_imgs/file/67017420791.pdfIn PDF document text
    • http://ebiocell.com/uploadfile/file///2021062316430063.pdfIn PDF document text
    • https://aplusadvance.com/naver_editor/data/file/fodekamazir.pdfIn PDF document text
    • https://www.arc-welding.co.uk/wp-content/plugins/super-forms/uploads/php/files/monj4cjjkb6e4ec2qb5o7fnjk6/1356335855.pdfIn PDF document text
    • http://www.look4job.gr/images/_user_na/file/75505745277.pdfIn PDF document text
    • http://brilspa.ro/userfiles/file///lakunobu.pdfIn PDF document text
    • http://lumieretvie.com/userfiles/file/gofun.pdfIn PDF document text
    • https://heritagecambodiatravel.com/userfiles/file/xibanalirekepa.pdfIn PDF document text
    • http://crystalnymph.by/wp-content/plugins/super-forms/uploads/php/files/58729c6cb0f16b3fc7a57bd3b8190616/lagofotazifuwunazopunab.pdfIn PDF document text
    • https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086c48fc564f---65808427234.pdfIn PDF document text
    • https://alihuata.com/userfiles/file/72204168834.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f6ea268659---dowafiketal.pdfIn PDF document text
    • http://freehajjandumrah.com/admin/admin/uploadfiles/file/tujefemijuvolugotiwavajer.pdfIn PDF document text
    • http://wsp.pl/userfiles/file/59295425358.pdfIn PDF document text
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/r1n2kotm73kj3q9b04dfom273s/90975806567.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b3ba2cd6387---78969497274.pdfIn PDF document text
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1607d6ae706beb---62952652011.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/vtrmj8i2tab8fv7qstqqi1kms3/64724643827.pdfIn PDF document text
    • https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/c7f23bcda2f683729fdbe41b07743abc/pakonosemaxobo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=importance+of+agency+bankingPDF link annotation
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160750b616e77e---40883432780.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_off0000fa98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA98 17864 bytes
SHA-256: 7db5710f6c913e07298858c878ec285fa762493b73a2cb5c1fddda1856d962ae
font_01_sfnt_off00012969.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12969 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014180.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14180 10908 bytes
SHA-256: ee41446546135024025bf821c6b75900623226117014b5b067635219d27d37fb

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