Malicious PDF — malware analysis report

Static analysis result for SHA-256 97784a87e7f2e82c…

MALICIOUS

PDF

84.5 KB Created: 2021-06-25 13:23:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 5286699316027d19105187acf30e6728 SHA-1: 04f958c0b4447811ed6543203bfb97c79ba1527b SHA-256: 97784a87e7f2e82c6ad04256701a5363b445fdc8567ec43757f6aa95055782f9
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised CMS upload directories, suggesting it's designed to lead users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. No scripts were extracted, but the link farm structure is a common tactic for initial access.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7f30e614a5---sudido.pdf In PDF document text
    • https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/55758381540.pdfIn PDF document text
    • http://www.redactordecontenidos.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16090626701d70---mefiwukos.pdfIn PDF document text
    • http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/16077a51a1c00d---lekebilinegazixonesatow.pdfIn PDF document text
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160750af325984---lizesabitibomobemapijojon.pdfIn PDF document text
    • http://drivingschool-brno.eu/files/59368670160.pdfIn PDF document text
    • http://islandpointfl.com/userimages/41000166201.pdfIn PDF document text
    • http://uralinteh.com/uploads/files/sitilegolir.pdfIn PDF document text
    • http://kibbkw.com/uploads/file/88629096400.pdfIn PDF document text
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a4a43c345a4---mipegivufarasenasadi.pdfIn PDF document text
    • https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/d3d3c887b1ad228a4b268821ac930c48/73991852625.pdfIn PDF document text
    • http://xlsferrosilicon.com/d/files/winugutiladaka.pdfIn PDF document text
    • http://securitydirect.it/wp-content/plugins/super-forms/uploads/php/files/6c3c149bd3f11558bd14548afcb29a49/48182631274.pdfIn PDF document text
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bafcfa8a9b2---ridutozuj.pdfIn PDF document text
    • https://daleel.global/wp-content/plugins/super-forms/uploads/php/files/sj91uavop48t44vdj812pb3t0l/difakawakejejaneliz.pdfIn PDF document text
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/22f3fcc10167c723487c0bfb3a3e8b64/58602576179.pdfIn PDF document text
    • http://caythuocdangian.net/images/files/61045351475.pdfIn PDF document text
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a4b5df9fdc0---marelonusopeziwinesevuz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=how+can+you+get+a+stye+in+your+eyePDF link annotation
    • 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A1 10652 bytes
SHA-256: b483a1a859a78d7097b82c61e0828a1af24260436e4d45ae7544b3e84ef4ecb0
font_01_sfnt_off00010035.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10035 16608 bytes
SHA-256: 98d9d8db4181c25c7b823bc48551958afe34ed1beb6711dfe6915827bc71c7db
font_02_sfnt_off00012b60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B60 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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