Malicious PDF — malware analysis report

Static analysis result for SHA-256 9debf9650b2f582e…

MALICIOUS

PDF

73.3 KB Created: 2021-03-06 22:54:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c3ae43aa7253607dd4bbbd0af23e4b54 SHA-1: 989c1d86fcb977a6bd386855e9c19b236f4ed82b SHA-256: 9debf9650b2f582eed31e3c6c63eb78f1d52b26e0722fa3ed3b1ed652120a0d2
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/wb?keyword=how%20to%20use%20dyson%20cinetic%20big%20ball PDF link annotation
    • https://guxojifupu.weebly.com/uploads/1/3/1/4/131438233/rorojixal.pdfIn PDF document text
    • http://bluebadgeform.com/dirazonipanflxn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489615/normal_60207f88eb48c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384642/normal_5fc898838066a.pdfIn PDF document text
    • http://lavkavkusa.store/d-link_dir-890l_dual_band_router5lf43.pdfIn PDF document text
    • https://cdn.sqhk.co/gubisagebuto/0gc2uii/best_shopping_list_app_apple_watch.pdfIn PDF document text
    • https://cdn.sqhk.co/rasidepad/hfnY8jg/87556026830.pdfIn PDF document text
    • https://sanijala.weebly.com/uploads/1/3/4/8/134889677/75c0dcbd4e.pdfIn PDF document text
    • https://cdn.sqhk.co/bafujifi/giaeoFH/kepusixe.pdfIn PDF document text
    • https://cdn.sqhk.co/vinogusi/idPhd1q/91740803126.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f901d9f4-7f42-41d4-aba7-702bf24bdb4c/honda_2600_psi_pressure_washer_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/customer_onboarding_template.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/how_to_fix_a_fridge_that_wont_get_cold.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9f7a5c5-979f-45a8-a885-bf07c9deb704/pipefitters_union_pay_scale_california.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/pegipovinujarawesu.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_off0000e057.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE057 5304 bytes
SHA-256: 42492eb759c5747dbe10160bf5052219e60f38391fd9a2a75e42b483b92e3b21
font_01_sfnt_off0000f28c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF28C 11088 bytes
SHA-256: cf1e2f2079614157748559137efe2477e892bf110913e7b2be10396ef4c3fc28