Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe8f15a7080f68e1…

MALICIOUS

PDF

70.3 KB Created: 2021-02-26 04:59:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: fecf1bc2bf98b8fa6ef384fc5ad95065 SHA-1: 533fbe93ec6b8e8d915de0e5db9375643ec75a94 SHA-256: fe8f15a7080f68e156caca3eb8e7385f6de5e5df7cfc8f91a6e98920867fb73e
244 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/123?utm_term=how+to+train+your+dragon+homecoming+full+movie+dailymotion In PDF document text
    • http://zimezobot.getenjoyment.net/why_does_my_ukulele_strumming_sound_bad.pdfIn PDF document text
    • http://chatik85939775.fun/vedigomovatuwumvo25.pdfIn PDF document text
    • https://cdn.sqhk.co/vixukose/gih4KCu/airport_city_promo_codes_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/zumufapofow/SwXicge/stickman_hook_unblocked_for_school.pdfIn PDF document text
    • http://itasda.online/adding_and_subtracting_negative_numbers_worksheet_6th_grade738zq.pdfIn PDF document text
    • https://jinozeposejide.weebly.com/uploads/1/3/1/4/131453810/wevel_wokomina_jiwirije_kexibal.pdfIn PDF document text
    • http://heleogose.online/luxatu6pti.pdfIn PDF document text
    • https://cdn.sqhk.co/digatamale/gfL8O6J/climber_plants_for_fences.pdfIn PDF document text
    • https://cdn.sqhk.co/xijisejes/ihgrndf/rokezefagabigu.pdfIn PDF document text
    • https://rigawolazi.weebly.com/uploads/1/3/4/7/134710531/6180062.pdfIn PDF document text
    • https://mulokigapasol.weebly.com/uploads/1/3/1/0/131070847/9601484.pdfIn PDF document text
    • https://zawasofolebu.weebly.com/uploads/1/3/4/9/134902788/luwewonovigopufoze.pdfIn PDF document text
    • https://cdn.sqhk.co/sejixikerut/hedhchh/callaway_erc_golf_balls_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/putizimetiwe/je0hh8A/75879668473.pdfIn PDF document text
    • https://sirukume.weebly.com/uploads/1/3/0/8/130814715/vapukevesi-domazupu-basifojov.pdfIn PDF document text
    • https://cdn.sqhk.co/junulevi/7iigjyc/ronivudozazipesisa.pdfIn PDF document text
    • http://mosebuzixat.mywebcommunity.org/how_much_to_charge_for_after_construction_cleaning.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ketabigumowun.atwebpages.com/69918691577.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_off0000d1fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1FA 5472 bytes
SHA-256: 6741271df082dd202152b60820b5055d7a8dfdead2490fe963cf7837ec4021d6
font_01_sfnt_off0000e491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE491 10824 bytes
SHA-256: 7dbe587d1e7e1dbb93e629bcecc16376168f04a3d297272712a422fe36062653