Malicious PDF — malware analysis report

Static analysis result for SHA-256 02660552d0f8aee2…

MALICIOUS

PDF

84.2 KB Created: 2021-09-06 16:17:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 6dfcd5ca702f4727a23746fc101c3df5 SHA-1: 00d16575ff73ced287c103fd0efe6acf12953fd9 SHA-256: 02660552d0f8aee21e1e1f141ac69689e26294df5afad77a7953cb9e82ce3d9f
176 Risk Score

Malware Insights

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

This PDF file exhibits multiple indicators of malicious intent, including a high ML classifier score and ClamAV detection as a phishing trojan. The presence of numerous URLs pointing to compromised CMS uploads and link farms suggests an attempt to host or distribute malicious content. The 'SE_ENABLE_LURE' heuristic indicates the document likely contains instructions to enable macros or editing, a common tactic to bypass security measures and execute further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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
  • 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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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://catamma.ru/uplcv?utm_term=cannot+insert+object+pdf+in+excel PDF link annotation
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a1b81b580de---lususijitevilamop.pdfIn PDF document text
    • http://legendtec-eg.com/wp-content/plugins/super-forms/uploads/php/files/fvt3a2iajuv1pgkv7oe4oc8n54/xogalegavasozum.pdfIn PDF document text
    • https://stopserv.ru/files/file/vezos.pdfIn PDF document text
    • http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075bf458b210---gefemopegunobidivisu.pdfIn PDF document text
    • http://brezov-gaj.si/uporabnik/file/28622212978.pdfIn PDF document text
    • http://blfimmobiliare.com/userfiles/files/94422996445.pdfIn PDF document text
    • https://brod-plovdiv.com/images/xajeketabebuwi.pdfIn PDF document text
    • https://gtijsr.com/userfiles/file/41581457294.pdfIn PDF document text
    • http://altelaw.com/uploads/image/file/pefigufojezunasanoke.pdfIn PDF document text
    • https://pianoinprimopianofestival.com/uploads/file/pinegiwatalewi.pdfIn PDF document text
    • https://limsurempat.com/contents//files/39240414387.pdfIn PDF document text
    • https://www.hasmow.com.au/application/third_party/ckfinder/userfiles/files/89674681999.pdfIn PDF document text
    • https://bosingels.nl/ckfinder/userfiles/files/lujijekegijusa.pdfIn PDF document text
    • http://evo-models.com/uploads/userfiles/files/vofofipirologe.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/ada701d5be2c47b6dae0414b8bae1874/19761919249.pdfIn PDF document text
    • https://www.citysecurity.org.uk/wp-content/plugins/super-forms/uploads/php/files/akj8ltd28b2mbt6ia19s590shv/79412634783.pdfIn PDF document text
    • http://finara-v.com/file_media/file_image/file/gowavim.pdfIn PDF document text
    • https://detectiveoffice.net/userfiles/file/5631774063.pdfIn PDF document text
    • http://mtecommerce.it/public/news/file/9241110265.pdfIn PDF document text
    • http://thaide.org/userfiles/file/29082650281.pdfIn PDF document text
    • https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/161304c3e03db6---59439399808.pdfIn PDF document text
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd38ba0318---86169562300.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/4e2540132d68d473cddf340d818406fb/58423442551.pdfIn PDF document text
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087436fd3e7b---2592156294.pdfIn PDF document text
    • https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/45295ac2e54abde1e9aefb0edd1f3e57/68696045287.pdfIn 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ded4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDED4 11016 bytes
SHA-256: 8ecbdb915bca9cc9474f580d5f4599acfd36431b977bad1c8338ffe954feb6cc
font_01_sfnt_off0000f85f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF85F 19248 bytes
SHA-256: 299d3acded05d17e36ec7a9a783dfdfa3de1801d05a1cf26e6e7ce1ee984dade
font_02_sfnt_off00012adc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12ADC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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