Malicious PDF — malware analysis report

Static analysis result for SHA-256 b99526f9a42cc6ec…

MALICIOUS

PDF

69.8 KB Created: 2021-02-20 11:02:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6d852a313387b5dfd4d90792227db89d SHA-1: 8c22d3c1900fe6ed0e7d98b997ed09c707681e1c SHA-256: b99526f9a42cc6ecaf0ee712c7387385fd64e61ea5221c630e0b6a3386bba7e7
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://druttle.ru/wix?keyword=old+is+gold+status PDF link annotation
    • https://cdn.sqhk.co/natefisaka/3icM9q3/business_words_dictionary.pdfIn PDF document text
    • http://fullhp.info/bad_boy_3gp_songvpz24.pdfIn PDF document text
    • http://mofawab.66ghz.com/sarkari_exam_group_d_answer_key.pdfIn PDF document text
    • http://trenolgia.buzz/where_is_the_water_filter_in_keurig_coffee_makerylxul.pdfIn PDF document text
    • https://cdn.sqhk.co/sevafeluba/fibij9m/nbc_sports_boston_on_dish_network.pdfIn PDF document text
    • https://cdn.sqhk.co/dibidoretu/FWC0gdg/capsule_wardrobe_2020_winter.pdfIn PDF document text
    • http://axecheat9.xyz/audi_s4_b6_avant_for_saleko8pr.pdfIn PDF document text
    • http://icub.tech/69352105297uxy5z.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4506159/normal_5ffb8420981b1.pdfIn PDF document text
    • http://usacreditmonitoring.info/zadanukcl3.pdfIn PDF document text
    • https://cdn.sqhk.co/videgogaf/vTjdjca/nexabifebipojadema.pdfIn PDF document text
    • http://icily.xyz/bombay_dyeing_diwan_bed_sheetsv5f6h.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418365/normal_5fc73d7f26596.pdfIn PDF document text
    • http://sis-paypal.com/dodesepidavizuletazcndt1.pdfIn PDF document text
    • https://cdn.sqhk.co/mewidexe/RWD16qm/game_maker_s_toolkit_mark_brown.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454811/normal_5fe4084d077b4.pdfIn PDF document text
    • http://ttttrrrr.space/rixudumuduwidotincti7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490133/normal_601fe1482995e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392193/normal_5ff47fe6ce500.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d598.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD598 4924 bytes
SHA-256: d2c721e13bef5e1400b8d2d64cb07900af673c5e6af7e15c4bfeb2a53027847c
font_01_sfnt_off0000e667.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE667 10508 bytes
SHA-256: 8b513b73bb1c839fd9b6fbbe335a93ae16400424a4d4b4def17aa7ff7e1449b8