Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cfbf89169b0fd16…

MALICIOUS

PDF

73.0 KB Created: 2021-03-01 03:43:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ad62280a96db485662d1748b640bedd3 SHA-1: 2a3bf8bb3d482601d84c4acf87135a648936c13d SHA-256: 6cfbf89169b0fd163f1d43f9f71f2fe0a21a0e08eeb0959eeeb3250b2b3160b7
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=vanilla+wow+warlock+dps+rotation In PDF document text
    • https://static.s123-cdn-static.com/uploads/4445882/normal_5fdea826e08c0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505839/normal_5ffe7bd409a25.pdfIn PDF document text
    • http://islta.fun/764449144419ryqx.pdfIn PDF document text
    • http://stroiline74.ru/love_poems_for_her_short_and_sweet_in_tamilywina.pdfIn PDF document text
    • http://mavaxur.mywebcommunity.org/kitchenaid_ksm2fpa_food_processor_attachment_with_dicing_kit.pdfIn PDF document text
    • https://cdn.sqhk.co/geruxibab/uugcgjd/62842889581.pdfIn PDF document text
    • http://lebizifijafaxim.medianewsonline.com/replacement_pump_for_drinkwell_360_pet_fountain.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414687/normal_5fd94b8bbf0fe.pdfIn PDF document text
    • http://tijukavuwoka.iblogger.org/4460526810.pdfIn PDF document text
    • http://gratoramaa.website/aggiornamento_android_tablet_acertxjbe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://duguzikazom.rf.gd/what_the_sinhala_meaning_of_criminal_law.pdfIn PDF document text
    • http://wafepugi.rf.gd/sherlock_holmes_tv_show_parents_guide.pdfIn PDF document text
    • http://xinirujoki.epizy.com/fox_tonight_tv_guide.pdfIn PDF document text
    • http://fojakosi.atwebpages.com/remington_550-1_side_scope_mount.pdfIn PDF document text
    • http://perexuwofogefo.onlinewebshop.net/how_do_you_apply_powder_to_denture_adhesive_beads.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_off0000e335.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE335 5188 bytes
SHA-256: f1c7d72c35bb3f8f56c61d08cd087ba53db5d2049b4ef52e4a0530554e2c4de2
font_01_sfnt_off0000f4fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4FE 10076 bytes
SHA-256: ec577cc664e489423eb71e1a23ebfb09252fd54871835ff2f788741a0b9ddab4