Malicious PDF — malware analysis report

Static analysis result for SHA-256 e465e1cea0669da6…

MALICIOUS

PDF

79.0 KB Created: 2021-03-24 06:00:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b8e7737f65fc78d0bcd3af99e14b92a8 SHA-1: 8fd6ba47c2f868014f4c0247d71282c8373fd06a SHA-256: e465e1cea0669da6ac37f9797bb22aad6a13ce683f99d4773155e0113c697371
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://botokaw.ru/wix?keyword=carl+hayden+high+school+az PDF link annotation
    • https://cdn.sqhk.co/wujamufaw/djcjbzR/word_cookie_cheats_daily_puzzle.pdfIn PDF document text
    • http://samo-katim.ru/big_book_pages_86_88dlk01.pdfIn PDF document text
    • https://cdn.sqhk.co/zubafena/igji8P8/tudoxusemafakiremevoporiw.pdfIn PDF document text
    • https://cdn.sqhk.co/wowixepis/iNQ3scx/occidental_heroes_character_guide.pdfIn PDF document text
    • http://itslm.fun/mele_kalikimaka_andrews_sisters_sheet_musicg85kg.pdfIn PDF document text
    • https://cdn.sqhk.co/fasixazijaz/qSgnojd/xprofile_gold_review.pdfIn PDF document text
    • http://zubiki.top/hannah_arendt_film_online_freewd41p.pdfIn PDF document text
    • http://opensol.xyz/how_to_count_the_number_of_atoms_of_each_element_in_a_moleculeo2crx.pdfIn PDF document text
    • http://fuxivipusutipu.iblogger.org/xilepuwezifu.pdfIn PDF document text
    • https://cdn.sqhk.co/wujukipako/3n1lzSl/descargar_actc_racing_hackeado.pdfIn PDF document text
    • https://cdn.sqhk.co/sovajepuxe/ixdio5g/screen_recorder_video_recorder_video_editor_freeware.pdfIn PDF document text
    • https://cdn.sqhk.co/totafeta/fZjjhdG/12357677150.pdfIn PDF document text
    • https://cdn.sqhk.co/sitopizol/fhb1G1Y/tiny_cabin_builders_ontario.pdfIn PDF document text
    • https://cdn.sqhk.co/sozivowemin/jjfIjjI/need_for_speed_most_wanted_ps4_playstation_store.pdfIn PDF document text
    • https://cdn.sqhk.co/torevebeti/chdXiea/sonic_all_stars_racing_transformed_mac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://24218389-b518-4ca3-8548-65eaf758daa4.filesusr.com/ugd/c836c3_c9427a2c05cb4faf8ba24087e3dce329.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f8b2992-698d-4b0d-809a-b20108c2d6b9/tuck_everlasting_story_summary.pdfIn PDF document text
    • http://novosumagib.epizy.com/zavepakenaz.pdfIn PDF document text
    • https://238a82c5-85a8-4641-a991-2f0f5270ddc4.filesusr.com/ugd/63f22d_c972f8a7e479446c9934701af7edb1e8.pdf?index=trueIn PDF document text
    • https://e192e36c-395d-4660-9df6-aa7aed00c30a.filesusr.com/ugd/3aee12_17673234e1fa471099043fe38b9ff17b.pdf?index=trueIn PDF document text
    • http://rokipomufudivef.rf.gd/ncert_solutions_for_class_9_science_physics_chapter_11_work_and_energy.pdfIn PDF document text
    • http://zopimejumujodeb.rf.gd/pekaboxerav.pdfIn PDF document text
    • https://d78d2789-9aef-4bfd-88be-9093bec910ef.filesusr.com/ugd/87a178_58c8ad155ca747429207936f3930cc9e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/08612d09-722c-4028-aa9f-8dab89d693cd/abb_acs800-11_firmware_manual.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_off0000f574.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF574 5256 bytes
SHA-256: fd93cf85a47b9d3a6701b52f7c8cc2689bf9da0c4eb9ab91b8cd57c0c7fb59b4
font_01_sfnt_off0001075b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1075B 11732 bytes
SHA-256: 14ca4338c61c6bc8c29afcc42066068ba8991e25bc7657213bb5e4b6b0d4bc47