Malicious PDF — malware analysis report

Static analysis result for SHA-256 206a5c7b23a70af1…

MALICIOUS

PDF

70.3 KB Created: 2021-02-26 21:09:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3501205182359f4c08b282a53e22b986 SHA-1: 1c97a9dafb9a4357b7aa42bdbe8c7ca61a6cd359 SHA-256: 206a5c7b23a70af1b4dff5539560ad0aa2bb6129c6ea98b9ee1cc2bc03fb191b
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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://fokemale.ru/award?keyword=atlas+copco+ga22+compressor+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4383566/normal_5ff1d2feb5978.pdfIn PDF document text
    • https://cdn.sqhk.co/motulobugaji/69AcyAz/cartoon_channels_on_spectrum_tv.pdfIn PDF document text
    • https://cdn.sqhk.co/gapekozuwa/jf0EZgf/download_anime_tiles_piano_musik_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393889/normal_6021fd2bc3e76.pdfIn PDF document text
    • https://cdn.sqhk.co/moxoxitij/AjujdSj/warhammer_40000_freeblade_v5._6._1_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/zalopubid/cryQgih/the_zero_vector_space_has_dimension_zero.pdfIn PDF document text
    • https://cdn.sqhk.co/zurefaxenov/9b2Lcgd/35396954277.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422134/normal_600fb678a53e6.pdfIn PDF document text
    • http://maxufadewodov.22web.org/fender_mustang_iii_v2_amp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420029/normal_5ff865013a032.pdfIn PDF document text
    • http://nesudad.iblogger.org/77955972550.pdfIn PDF document text
    • http://bapupozizevose.22web.org/11409076631.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380681/normal_600d33e8e07cd.pdfIn PDF document text
    • https://cdn.sqhk.co/meduxemij/eHHiijf/guide_myclub_pes_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/keropolor/gdidH1O/sajusuvimipigi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sunusegelu.rf.gd/lost_boy_piano_sheet_easy.pdfIn PDF document text
    • http://luzatazekasuv.rf.gd/mokezigomun.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/alaska_airlines_gate_information_dfw.pdfIn PDF document text
    • http://kiganume.epizy.com/39077355664.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/toloxelenul.pdfIn PDF document text
    • http://wevedikelu.epizy.com/85010801221.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_off0000d764.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD764 5372 bytes
SHA-256: aeaf983bcb15e3171157abea1b358c4b17f2c712d29cd607b955c27560600e42
font_01_sfnt_off0000e998.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE998 9964 bytes
SHA-256: 8a21d3ba890b2e9a946f4a773e12bf64c96d35d3b4cb9a04ac9801916203e697

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