Malicious PDF — malware analysis report

Static analysis result for SHA-256 eed42a76bdab4280…

MALICIOUS

PDF

68.4 KB Created: 2021-03-04 12:09:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c74230e2d260d7d38829f3e271486ea4 SHA-1: d3f08b0b26b66b92ff50228bad8306d108b4f915 SHA-256: eed42a76bdab42807d5e77c2406d4d33533e596968ab1ead06c17dfa65d04147
184 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
  • 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 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/wix?keyword=stick+figure+badminton+game In PDF document text
    • http://fb-ig-copyright.com/are_ups_batteries_hot_swappableorao3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495525/normal_6017d05326cb7.pdfIn PDF document text
    • http://julivojurukumu.sportsontheweb.net/how_to_sell_a_buy_call_option_on_robinhood.pdfIn PDF document text
    • https://wipezupogev.weebly.com/uploads/1/3/4/3/134307181/5243691.pdfIn PDF document text
    • https://cdn.sqhk.co/fivodewile/OjiShiH/running_shoes_for_men_with_flat_feet.pdfIn PDF document text
    • http://rejemezurufoveg.mywebcommunity.org/brother_mfc_j5910dw_printer_offline.pdfIn PDF document text
    • https://dobamadolexazi.weebly.com/uploads/1/3/4/4/134478964/lamaloz_vorevizurijo.pdfIn PDF document text
    • http://marafonsport.site/7352583553zh3jm.pdfIn PDF document text
    • http://abouts.space/scary_tired_math_teacher_everyone_is_sleepy_modellt3e9.pdfIn PDF document text
    • http://mugedly.xyz/motorola_surfboard_sbg6580_wifi_light_not_ong2x3b.pdfIn PDF document text
    • https://cdn.sqhk.co/mejabutumu/gjcEVhb/bugelufakuralamib.pdfIn PDF document text
    • http://faponabon.mygamesonline.org/perfect_english_grammar_zero_conditionals.pdfIn PDF document text
    • https://cdn.sqhk.co/kisunika/VjckvRQ/56764055874.pdfIn PDF document text
    • https://vetazewufa.weebly.com/uploads/1/3/2/8/132814418/48e717d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390642/normal_602c84b5e177b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/child_care_application_and_authorization_form.pdfIn PDF document text
    • http://pevipitoz.atwebpages.com/53692912185.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/curriculum_vitae_resume_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/33920718427.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/can_you_solve_this_puzzle_30_answer.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_off0000cf12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF12 5436 bytes
SHA-256: 846655d655c4445d3218921cb5ae6ea9f7972aec2acf609ffc8fa85c0f48643f
font_01_sfnt_off0000e189.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE189 10228 bytes
SHA-256: ba45d8a2d2acdbf79c738d6cb29f7196585c625534964325081fb0ae28fbf68e

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