Malicious PDF — malware analysis report

Static analysis result for SHA-256 daf3439bea4e6643…

MALICIOUS

PDF

184.7 KB Created: 2021-06-17 04:31:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: e6b520029d415ce0fc5ace91b42bd563 SHA-1: 73081c96390890444d8a9de8e849c61c3c327438 SHA-256: daf3439bea4e664370e09be1897fd907d61f7988b687b2912b88f0fbd4de98d6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, presenting numerous URLs that are likely intended to redirect users to phishing or malware download sites, disguised as content related to 'Dragon Ball Z'. The PDF structure and embedded URLs suggest an attempt to exploit user interest in media downloads for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://allytemp.ru/uplcv?utm_term=dragon+ball+z+all+episodes+download+in+english PDF link annotation
    • https://adepotcustom.com/UploadFiles/file/20210429041203197.pdfIn PDF document text
    • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160abac3761b39---jovabarosel.pdfIn PDF document text
    • https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/1a8eqjmhjl68893smkmgk5gekp/xuvezasijurezizujaw.pdfIn PDF document text
    • http://championshipsportsrings.com/clients/23492/File/51691154558.pdfIn PDF document text
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2e38c59616---69942493518.pdfIn PDF document text
    • http://hi-techfiber.com/userfiles/file/jetixibavukopixeribekopi.pdfIn PDF document text
    • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/58heacfms4kae220guk5ggeipf/gopebokosaxiz.pdfIn PDF document text
    • http://project-lovcen.me/userfiles/file/86811579685.pdfIn PDF document text
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c999f25d6d---musiluvinef.pdfIn PDF document text
    • http://krevue.cz/UserFiles/File/35170472781.pdfIn PDF document text
    • https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/hjqkr3a6fcaf58ouet0kumuo26/wawisodofiwivaxexolisotis.pdfIn PDF document text
    • http://alituncer.com/userfiles/file/1316546041.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/89355047377.pdfIn PDF document text
    • https://unique.global/wp-content/plugins/super-forms/uploads/php/files/d994a0894ccb64dd17c6e2e7aba2aff6/17084394740.pdfIn PDF document text
    • https://bayardplaza.co.uk/wp-content/plugins/super-forms/uploads/php/files/7p1ql2lke3rm30erto5eu67bqc/dusunebawemobonape.pdfIn PDF document text
    • https://jnfarley.com/wp-content/plugins/super-forms/uploads/php/files/hc4fmlot23tsn6qgmkj1cqveu7/dejiterotirotapapoliser.pdfIn PDF document text
    • https://www.emma-solutions.de/wp-content/plugins/formcraft/file-upload/server/content/files/160909d3a94c1d---paduvozadapog.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001dc87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DC87 48512 bytes
SHA-256: 4adf94a3f28b157c9e719b3732cbeef9400e27cdae0d4c101fa31b2a78c631af
font_01_sfnt_off00027075.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27075 5500 bytes
SHA-256: f11c17db547913892e89a3ecdc213f77c81eaa1797040363ad583ea8cac657da
font_02_sfnt_off00028331.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28331 2140 bytes
SHA-256: 3eadf3ff1ae85f7a2dd8be852d633ca148c1d24200a16cbd4325889adc5789c4
font_03_sfnt_off00028d0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28D0B 13496 bytes
SHA-256: a3fb7d92ea529f33c46240ae0271cad46022856c6d9af595ad5c53c5c47f1b62
font_04_sfnt_off0002b993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B993 17112 bytes
SHA-256: 436829979245b7126098886beec731c3e32f79caaa22165f5cf5bd484c81a714

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