Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0d7054080f35275…

MALICIOUS

PDF

87.2 KB Created: 2021-06-29 21:19:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 6d895c732cc4ff18a6a0903c6c1b3c97 SHA-1: a0763447024b5f1b211efbd5ca8065012d7094e4 SHA-256: e0d7054080f35275e419eed9712da09d8bdcafce578f97e58a811bf375aaa0ec
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs that point to compromised WordPress sites and other disposable hosting. The primary purpose appears to be directing users to potentially harmful external content, consistent with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://oniceh.ru/uplcv?utm_term=bet+with+girlfriend+ideas PDF link annotation
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/869ce53a896df943bd1f9c68be08f2bb/tadivowif.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/160ba7d4bd718d---tilonimizoxamesiwizumug.pdfIn PDF document text
    • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/a27ad55a9ce7f2d632a235e54e006118/1159872904.pdfIn PDF document text
    • https://dixietemporarystorage.com/wp-content/plugins/super-forms/uploads/php/files/fb04085d3f2450def175ce0297cc7d04/58497557293.pdfIn PDF document text
    • https://aterhesseg.com/up_image/file/25786942783.pdfIn PDF document text
    • http://pokorny-podlahy.cz/UserFiles/File/83814040151.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bd3601d48f---72245393261.pdfIn PDF document text
    • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/44f17ef625a8ce2aed80050e48c1400f/fasilabal.pdfIn PDF document text
    • http://altelaw.com/uploads/image/file/vifexij.pdfIn PDF document text
    • http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b06f9b6489e---17772588212.pdfIn PDF document text
    • https://munord.com/wp-content/plugins/super-forms/uploads/php/files/eb194c1a75041a64721ddd8ca2bf1179/21424595627.pdfIn PDF document text
    • https://www.tangelo.no/wp-content/plugins/formcraft/file-upload/server/content/files/160787ec6230dd---80284299926.pdfIn PDF document text
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/229ff79cad5b48376629a02560948528/visusilizixasegakefemo.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/e3c0b852d50aefc0236c5571c86fa633/822750814.pdfIn PDF document text
    • https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608fcdceace06---nedanatekup.pdfIn PDF document text
    • https://burstallconrad.com/editor_files/file/wuronatu.pdfIn PDF document text
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d393498d7a8---vujegiz.pdfIn PDF document text
    • http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608e9170494c8---86287617349.pdfIn PDF document text
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a7371acd88---27071967477.pdfIn PDF document text
    • https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160942ceca129c---58294911319.pdfIn PDF document text
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/4aovb5kh31guh6vlpi94hmopcq/58468677639.pdfIn PDF document text
    • https://www.kunapak.com/wp-content/plugins/super-forms/uploads/php/files/e3d4gn9k9sgn6o3155c3nbkqj5/49333553612.pdfIn PDF document text
    • http://pcccphucvinh.com/upload/files/xumabajepumeji.pdfIn PDF document text
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/4e60c872dd65a638b7f37923d545f736/50709885088.pdfIn PDF document text
    • https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/ba436cf1d519d9d8f3352d85ba79ba64/mugoforakuwivifukam.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d9c2f94bdb---zafemufedosi.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_off0000f288.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF288 10652 bytes
SHA-256: 6687f31552378ad0bd61880a116e33b5fefb0fab0255baa72133382881a0619f
font_01_sfnt_off00010ab0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AB0 16640 bytes
SHA-256: fd914f3ed67870b33ed665b1e764aab5116fb0dab5f27bd6c0b63eda93c164ba
font_02_sfnt_off000135a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135A1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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