Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee494030726a9e2d…

MALICIOUS

PDF

80.5 KB Created: 2021-06-26 08:22:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 529e07aaa732869f0b1eace17c6b3b8e SHA-1: 6a2584217f7e20c8fc36d73cdf036cf78ba92a3f SHA-256: ee494030726a9e2d370ebaf2556a47f410970359edc6753296cd070c476c4ca8
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous links pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to redirect users to malicious content. The presence of these links suggests an attempt to distribute phishing content or further malware payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9764

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://pixomot.ru/uplcv?utm_term=shop+drop+meaning PDF link annotation
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1609f9d65cc147---29161845777.pdfIn PDF document text
    • http://euro520.net/userfiles/file/16217423171255337871.pdfIn PDF document text
    • http://blissrenewbeauty.com/newerac2c/userfiles/file/ramivepajetutunaloli.pdfIn PDF document text
    • http://staractivecollection.com/resimler/site/files/lezigima.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160d240833753e---28706542379.pdfIn PDF document text
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e4ac248903---25381359068.pdfIn PDF document text
    • https://carrieres-pierre.com/userfiles/file/66788100772.pdfIn PDF document text
    • http://studiolorenzoni.eu/userfiles/files/10203895312.pdfIn PDF document text
    • http://win-sonic.com/kida2018/ck_imgs/files/26291554962.pdfIn PDF document text
    • https://spacio.hk/attachment/file/5242401109.pdfIn PDF document text
    • http://dichvugiayphep.net/hinhanh_fckeditor/file/mipuzizukilawopagaxes.pdfIn PDF document text
    • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/647bfa52c5ce19b5e56d2f2cf71ca4db/33850034287.pdfIn PDF document text
    • http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5bb332f28a---nupebusimesisufisoliza.pdfIn PDF document text
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/8u1hfg9m4204fg8g8cudarvbc4/16378435933.pdfIn PDF document text
    • https://garyjetcenter.com/wp-content/plugins/super-forms/uploads/php/files/ed0c082cf266d85b8b221d51e186711a/57409747249.pdfIn PDF document text
    • https://nanosoft.mn/images/content/File/35322171460.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608524652fc26---92334537096.pdfIn PDF document text
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/1a3397a8edccd42a611052ff27225ac7/safesakofinixowepo.pdfIn PDF document text
    • https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/97eb7e0ae509e8d6a7ad3982edd43e5d/76611203726.pdfIn PDF document text
    • http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bff2f0d705c---26349901300.pdfIn PDF document text
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160980eaf7a9ff---vules.pdfIn PDF document text
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/fjunh7lrn6rdulejp8btqn12er/labitijipojewemi.pdfIn PDF document text
    • http://uhli-janmaria.cz/userfiles/file/jezulaxitojeruzixidit.pdfIn PDF document text
    • http://ezibra.pl/upload//file/mejezewepobigulinunepebof.pdfIn PDF document text
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/cq9q290eimq94k4j7a2mrhdiu6/33060175396.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9aaad50e32---jafelubutefulumovas.pdfIn PDF document text
    • http://notarbrazda.cz/userfiles/file/32117527373.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c3fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3FA 16676 bytes
SHA-256: e963a3c6e436e0ab3a73abaf07e3c562ed4015d0446d454ea911e043f42ca14d
font_01_sfnt_off0000ef97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF97 10604 bytes
SHA-256: 8236ab37b5ed4a3ef31ba0be4cda05fcef86b99f69173641304b41f49e840b03
font_02_sfnt_off00010756.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10756 5448 bytes
SHA-256: f1f211431627ea992f78bb2d1a9edaa5d94ec623909a8290f90d2b4d714a049b
font_03_sfnt_off00011ad7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AD7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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