Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfe935405681147e…

MALICIOUS

PDF

70.3 KB Created: 2021-03-06 01:38:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f9fcd419e69d5bad7dc5eabb98770dee SHA-1: 864f50b2e2bc063127e72b4f03506ab5b46b4421 SHA-256: bfe935405681147e4bfd3fc4a156ad2a3ab56f22451660d5cf79a6f4f3614175
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://midufefew.ru/wix?keyword=angry+trumpet+guy PDF link annotation
    • http://lizowaw.scienceontheweb.net/62379125588.pdfIn PDF document text
    • https://lokawinopigu.weebly.com/uploads/1/3/2/7/132712062/3198924.pdfIn PDF document text
    • http://internet-babki.ru/harman_pellet_stove_insert_installationsmrvj.pdfIn PDF document text
    • https://katodelof.weebly.com/uploads/1/3/6/0/136051175/4654799.pdfIn PDF document text
    • http://bluhgang.best/25374750947h8gav.pdfIn PDF document text
    • http://toppiksnack.xyz/ruzofaturov02a4b.pdfIn PDF document text
    • https://xalekosud.weebly.com/uploads/1/3/5/3/135350534/3116312.pdfIn PDF document text
    • https://rijevolokawuja.weebly.com/uploads/1/3/4/6/134661742/bisexasub.pdfIn PDF document text
    • http://mevukavotidu.getenjoyment.net/short_moral_stories.pdfIn PDF document text
    • http://triple-doska3.club/among_us_gif_wallpaper_get_off_my_phoneh13k5.pdfIn PDF document text
    • http://rixuliketasaban.mywebcommunity.org/how_much_does_an_electrical_engineer_earn_per_month_in_south_africa.pdfIn PDF document text
    • https://bejivuvepezera.weebly.com/uploads/1/3/4/4/134437422/4780839.pdfIn PDF document text
    • http://sikazigazes.mypressonline.com/the_graveyard_book_by_neil_gaiman_audiobook.pdfIn PDF document text
    • http://forkidsshop.online/befawidenebalemekerifigpf3fb.pdfIn PDF document text
    • http://bunnygummy.ru/35618170744ai6mb.pdfIn PDF document text
    • http://how2clever.com/share_chat_app_in_teluguoriq9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vesedakowata.onlinewebshop.net/39877387875.pdfIn PDF document text
    • https://a62e46b8-d933-4087-892c-e5439cec6991.filesusr.com/ugd/e9cba9_1acfc4f89568459f862e38cf0b7ea33a.pdf?index=trueIn PDF document text
    • https://58f604bd-1fd8-4cfe-af9b-f15e67d030d5.filesusr.com/ugd/9a7439_aa3f1622662d4988a0c67cf9f092719a.pdf?index=trueIn 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_off0000d907.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD907 4808 bytes
SHA-256: 9a3a9fc0f16b0561dc638b8f874ced8436f1106ff7dbc9b3589a6039cdb5d0c2
font_01_sfnt_off0000e961.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE961 10212 bytes
SHA-256: 22ed66cd6e2fb89b78a97c965877ee3ff34451b4130ec4431fe00af2550083d8