Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d9549bb3b6c8358…

MALICIOUS

PDF

109.5 KB Created: 2021-06-29 02:21:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a17abc6d80cadce53cf19a00b37d4839 SHA-1: cbba924819db184f23d82e32b282bef18700f62e SHA-256: 9d9549bb3b6c835818e007ba18bec01d0506694d0482a9222c028287dc445c0b
196 Risk Score

Malware Insights

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

This PDF document is identified as malicious by ML classifiers and ClamAV, and exhibits characteristics of an advance-fee scam. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting an attempt to redirect users to fraudulent content or download further malicious payloads. The document's structure and embedded links strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

Heuristics 7

  • 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.
  • 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://smidgel.ru/uplcv?utm_term=homeopathy+materia+medica+online
    • https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/fbjkbhcqjtt989rc2uee8rdg1g/wilavujonuxekimijuresib.pdf
    • https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/ab8g7k458eufuj03bc64brnivj/xizujobobek.pdf
    • http://xn--2vxr09c6mc.tw/CKEdit/upload/files/78315983994.pdf
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160805b7bbd9b1---jinam.pdf
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/1607cbe6e5ed22---26682635616.pdf
    • https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/d126a3b2a91671b0c5b00b6edc38216d/35807896378.pdf
    • https://www.alphaveneers.com/wp-content/plugins/super-forms/uploads/php/files/57f6cd228062e9328c1cb0be2d2b9564/bikupizalemegemuxula.pdf
    • https://www.emma-solutions.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a1a2b7ed661---80703259941.pdf
    • https://ltgtrends.com/wp-content/plugins/super-forms/uploads/php/files/cc501e29544d4b8a3e7cba557a988fab/bipugawebob.pdf
    • http://akcjonariusz.com/UserFiles/file/50051649149.pdf
    • https://marljivo.hr/userfiles/file/bilawazanokogupuv.pdf
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/443af790c5c0be4d2b247cca423bcb21/93934010542.pdf
    • http://vantaibactrungnam.vn/upload/files/peketunufi.pdf
    • http://riph.pl/userfiles/file/lezar.pdf
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/5d8621729813eaee86f82ad38d748a3f/72799271394.pdf
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608acea7ed302---wikorigo.pdf
    • http://scales-center.com/shop/fck_file/file/dimev.pdf
    • http://allaboutdowney.com/userimages/25299251507.pdf
    • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16083faa0bb509---dumikowobilegadopuvejip.pdf
    • https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/4c694e89a8deef7880063a60a4346b4b/lotakenudolat.pdf
    • https://www.chesapeake-lighting.com/wp-content/plugins/super-forms/uploads/php/files/f3b8a7d386887ffcb1ea6ef0f71f3aea/pimavigitozelutepe.pdf
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ca06cc389bd---meragun.pdf
    • https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16079e39c1f49c---41291269111.pdf
    • 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_off00013a85.bin
28135e118e403fb8e23a0ff5c0d5399c64703a973180f6c2fc7bc34a56e8b0be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13A85 24016 bytes
font_01_sfnt_off000176bd.bin
8b963b79c0d08f3dc872caaa242aea5941608d593c22f57ba682263a5ff79fb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x176BD 10716 bytes
font_02_sfnt_off00018f15.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18F15 16792 bytes

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