Malicious PDF — malware analysis report

Static analysis result for SHA-256 612f9363bd0ac354…

MALICIOUS

PDF

70.8 KB Created: 2021-02-13 10:40:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f8f30eeb8b1bd59cba095a127228602c SHA-1: 669d43ec90eb0b13738c5fdb18d1805688ef2d6a SHA-256: 612f9363bd0ac354c345a6bba992d2f8201a26f72dc2cdc7e0882a720733182a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/wix?keyword=starfall+calendar+2020 PDF link annotation
    • http://pusaburuku.22web.org/boca_vs_barcelona_formaciones.pdfIn PDF document text
    • https://nuniladolu.weebly.com/uploads/1/3/0/7/130775245/labijutazukonazokote.pdfIn PDF document text
    • https://bizitodavil.weebly.com/uploads/1/3/4/3/134321392/7cccf80ec3e33be.pdfIn PDF document text
    • https://piwomokoxik.weebly.com/uploads/1/3/5/3/135335333/devawusilij.pdfIn PDF document text
    • https://texitanoz.weebly.com/uploads/1/3/0/7/130739996/fikipa-wokutujowamikew-jumomud-pokapuloti.pdfIn PDF document text
    • https://cdn.sqhk.co/sibamoxa/ecim3Lc/historia_battle_napoleon_deluxe_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/segexiji/jgeibvq/hd_camera_pro_professional_4k.pdfIn PDF document text
    • https://cdn.sqhk.co/bizufunido/hfjbSxq/healthy_cake_recipes_for_dogs.pdfIn PDF document text
    • https://cdn.sqhk.co/luwivimexu/cFidjgh/tom_and_jerry_movie_2021_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/voxoduvi/ha0ieii/gray_line_new_york_bus_tour_map.pdfIn PDF document text
    • https://cdn.sqhk.co/rurufimibiwe/lNhagWt/sibatit.pdfIn PDF document text
    • http://rabisoluvilava.iblogger.org/dalmatian_dog_mask_template.pdfIn PDF document text
    • http://dressnbuy.com/60066701680i6i1e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kafogateginoni.epizy.com/compare_and_contrast_venn_diagram_worksheets.pdfIn PDF document text
    • http://zoniguzetixan.epizy.com/lost_maples_foliage_report.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9AB 5216 bytes
SHA-256: cceb936886f5d195346739d9fc43d5e7330c605bac75546cdaeefe54c2a8dac7
font_01_sfnt_off0000eb74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB74 10264 bytes
SHA-256: d15a76d105560730c14af716c4032e80832ddbbe44c45f3c69476beb1d30e37a