Malicious PDF — malware analysis report

Static analysis result for SHA-256 52f7bd9914a6bd39…

MALICIOUS

PDF

69.0 KB Created: 2021-03-04 07:41:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 18e320652f5f421790486df28bd01e95 SHA-1: 4f6c7226381a148f6f45a32715969e2da32c4580 SHA-256: 52f7bd9914a6bd3916097d7508f1ae0c12586dde486381b205488fe55bc8234e
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://xajibur.ru/wix?keyword=72+names+of+god+yehuda+berg+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4495837/normal_60062501141fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449000/normal_600fde786d4c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368964/normal_601c6b22e6ee8.pdfIn PDF document text
    • https://cdn.sqhk.co/dekavaka/Yjbjbjg/new_five_nights_at_freddy_s_game_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/pofoxubo/ZjgJKEM/at_z_mp3_ringtones_free_download_telugu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367617/normal_5fcb8f3722b57.pdfIn PDF document text
    • https://cdn.sqhk.co/ganuniwiku/gijcKOB/rodiwibumen.pdfIn PDF document text
    • https://cdn.sqhk.co/baradudapati/CEgjzsz/iron_stickman_rope_hero_gangstar_crime_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/ximepadogi/gidqCfo/hearts_of_iron_2_vs_3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405930/normal_6002eded33e04.pdfIn PDF document text
    • https://fizabawizusor.weebly.com/uploads/1/3/4/0/134000364/1302136.pdfIn PDF document text
    • https://naxozafo.weebly.com/uploads/1/3/1/4/131483391/7045940.pdfIn PDF document text
    • https://gubukaxonular.weebly.com/uploads/1/3/5/3/135349028/pavijezota.pdfIn PDF document text
    • https://vezutokabev.weebly.com/uploads/1/3/4/7/134758566/5117197.pdfIn PDF document text
    • https://cdn.sqhk.co/muzorefu/Hgc2jgV/xevikajebegituberinoxo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500187/normal_604047ad1c743.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/how_much_is_a_2016_lexus_rx_350_worth.pdfIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/temple_run_brave_apk_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/5_languages_of_love_list.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/end_of_life_product_template.pdfIn PDF document text
    • https://s3.amazonaws.com/wewiro/whatsapp_video_call_recording_app.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_off0000d232.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD232 5784 bytes
SHA-256: 0b0b7d4af0c5a2e79aaed55a5194694e220a518e0daf0ee468f81e4854da933e
font_01_sfnt_off0000e5c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C2 9696 bytes
SHA-256: a5cd1284dab9e8c2f6a535733999518cdb21a87272940faf1c0b6c2520ca0a4d