Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d0e87d108f76603…

MALICIOUS

PDF

95.2 KB Created: 2021-06-26 06:10:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9b0580b0e81537101b3505dc2baa7ca3 SHA-1: 1865004d159683ab1d9b934f35eec85a4f201303 SHA-256: 0d0e87d108f7660351771787fa32108e21afdeaa7d834af8d3eb30692056fa59
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains numerous links to external websites, many of which are hosted on compromised CMS platforms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The structure suggests it's designed to lure users into clicking these links, potentially leading to exploitation or credential theft.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/28037c3dbd41ebe98a474c0bea8dc2d1/sivoforake.pdf
    • http://icltindia.in/userfiles/file/24979826510.pdf
    • https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/f1a77224aa56bc6722a27de16f14dd08/45555263665.pdf
    • https://ludifrance.fr/userfiles/file/sokirojokopizupope.pdf
    • https://dimensionshoppe.com/alpha/ckfinder/userfiles/files/bajilomoxukisemi.pdf
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607086d9110ed---gutukozugiwoxi.pdf
    • https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/349af68b371734a330e6d781ab910b21/72228182467.pdf
    • http://www.injamal.es/nueva/ckfinder/userfiles/files/sexekakabilirugovafe.pdf
    • https://rybczewice.pl/userfiles/file/46761507357.pdf
    • https://wccia-vastu.com/wp-content/plugins/super-forms/uploads/php/files/52739b44902dd2706fb31be534ce6b48/263644511.pdf
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/n3krsfvc3vc8r1anc8quh5fef7/gelixuruloferawakomub.pdf
    • http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609839aed8b41---74276699688.pdf
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607c2a833b319---27186823389.pdf
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160cf10e1dbca8---kunofakexefurujubuxegumi.pdf
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/qo17n528cffejfpvn65hp68gqc/volefogopazewevipubakere.pdf
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bfc9acc8dc---68107992721.pdf
    • http://abimobiliare.pl/pliki/File/medeziwusig.pdf
    • https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/66eb2657d81c64d4c3e17afca5121f5e/90369546461.pdf
    • https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/e5uvclj11annl7l39af098dego/lopodamalaletoluz.pdf
    • http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608fd26aa2b4b---nimeb.pdf
    • http://myboydfamily.com/clients/7/7f/7f513a2250c12de81a70a6735749c289/File/weruminilomoboxofodupu.pdf
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/jviq8dldfs70nn4qg9o8lap3q1/74590336587.pdf
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/jokbddcgis2ahdmg4a6cg3hg73/dakujuf.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=verb+to+be+for+children
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011259.bin
deb258adae8ac3bdcc905d52f0bfbb830fcae5db11df22c953ef6e0c4b5e35ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x11259 17544 bytes
font_01_sfnt_off000140be.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x140BE 16792 bytes
font_02_sfnt_off000158d5.bin
f546aa6c2f8a2339a7c1eb5c6d10a88c1c1bc5d883bc91a91858fac077425a6c
pdf-font-stream PDF embedded font (sfnt) at offset 0x158D5 10352 bytes