Malicious PDF — malware analysis report

Static analysis result for SHA-256 96204af2b6db2afb…

MALICIOUS

PDF

97.9 KB Created: 2021-06-27 21:56:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 945a6758e593872cf577c90dda3529f9 SHA-1: 254eb7f718ec98da78431dcf16409e48a61b381b SHA-256: 96204af2b6db2afb5b075264b08d1857d18e03a4052c84cca6a98d31c3b6affd
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards an attempt to redirect users to malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

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://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/85vdp9vrm7kjie2i1q4ncmgbgv/kanazurituvoresofitegani.pdf In PDF document text
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089a442d6c5b---dujudezezofanuloteluzeb.pdfIn PDF document text
    • https://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/e32d10e720f929a0d4688fe93180ebd9/jevopi.pdfIn PDF document text
    • http://gyobel.it/public/file/sexozuzakewakefulasuvim.pdfIn PDF document text
    • http://ankurgroups.com/userfiles/file/15803567668.pdfIn PDF document text
    • https://latework.cz/soubory/12151847725.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/3259446957.pdfIn PDF document text
    • http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/160843f8bb90e9---55470629687.pdfIn PDF document text
    • http://hrzservices.com/uploadfiles/file/79041651058.pdfIn PDF document text
    • https://flvirginia.com/wp-content/plugins/super-forms/uploads/php/files/a69d683b35dea5d8896d366279ee34a9/nabofesekup.pdfIn PDF document text
    • http://alpha-th.com/userfiles/file/41656626514.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/160930734f0eb8---wasogogivetegitenarobe.pdfIn PDF document text
    • https://razdolle.by/wp-content/plugins/super-forms/uploads/php/files/loa9vrfrcafhohd6r6hdvmfc36/jebiwubewoluzubi.pdfIn PDF document text
    • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160a165787f95e---97938648013.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a15f30f1608---61091922774.pdfIn PDF document text
    • http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/74c0b50e5cc59760686129903ca82e7d/63228467999.pdfIn PDF document text
    • http://meble-tk.pl/userfiles/file/75794507963.pdfIn PDF document text
    • https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/4acspitkm0kf9281ql4lqa2ai7/20532508160.pdfIn PDF document text
    • https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/t2g6ndk3kds7842s1791kauu96/77476770940.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160900e351253f---77286272211.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/l70v9bgio836dfqpmic3brtlc6/96170665020.pdfIn PDF document text
    • https://keluargamimpi2.com/contents//files/12097849496.pdfIn PDF document text
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/1607290d7a25e0---43056849942.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=maths+worksheet+for+class+5+shapes+and+anglesPDF 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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000100d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100D2 18600 bytes
SHA-256: e404b2da46bb5cc3426b9e2bdf20f1c0acd1ff92bcfb9c03c75e1430318ca455
font_01_sfnt_off00013243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13243 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014a5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A5A 11112 bytes
SHA-256: 4c25c4653f09c7f927924c9228091e261afb47d104638a5508de95eb606a8792
font_03_sfnt_off00016430.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16430 16144 bytes
SHA-256: fcca37035df06e555c2991ff65faa0e8497ca6423bee408ebc46b3aef925b516

Open this report in the interactive analyzer, or submit your own file for analysis.