Malicious PDF — malware analysis report

Static analysis result for SHA-256 be54195759e9ebc3…

MALICIOUS

PDF

71.8 KB Created: 2021-02-20 00:41:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: beb4996d1400d8b438739ca15c34ef3b SHA-1: be1885845edf6dd2ba92f59cd85881908135d4ba SHA-256: be54195759e9ebc33db9332630f3184736a5c0dba043b69eb35ad70c90330d60
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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/wix?keyword=rival+stars+college+football+mod+apk+ios In PDF document text
    • https://doxibizogo.weebly.com/uploads/1/3/4/8/134893922/sipatadu.pdfIn PDF document text
    • https://cdn.sqhk.co/fusajovogi/igjh6YK/solar_system_planets_sizes_in_order.pdfIn PDF document text
    • https://cdn.sqhk.co/tebefaravuz/j6jcjhw/father_sons_clothing_jeans.pdfIn PDF document text
    • https://cdn.sqhk.co/difejekexe/jhcSijr/top_100_songs_2012_wikipedia.pdfIn PDF document text
    • http://smartcreditus.info/didutotuphl8qk.pdfIn PDF document text
    • https://cdn.sqhk.co/jaxabofapuw/gggopvn/bubble_tea_maker_game_online.pdfIn PDF document text
    • http://xonejixa.22web.org/bookworm_adventures_deluxe_volume_2_free.pdfIn PDF document text
    • http://podarokinsta.site/best_gmat_prep_book_2020wu4lz.pdfIn PDF document text
    • https://cdn.sqhk.co/tavaxiwugo/ajhokje/f1_2021_playstation_4.pdfIn PDF document text
    • https://cdn.sqhk.co/ketixudolu/jibiwk1/university_of_alberta_engineering_calendar.pdfIn PDF document text
    • https://cdn.sqhk.co/luxixumogez/gcihAeX/best_craft_organizer_portaink_dual_swivel_traveler.pdfIn PDF document text
    • http://axecheat9.xyz/wapifeziudtif.pdfIn PDF document text
    • http://mosquito.codes/102160459384k6rv.pdfIn PDF document text
    • https://wupugosow.weebly.com/uploads/1/3/1/3/131382590/0f0cdc8a9ab08.pdfIn PDF document text
    • https://cdn.sqhk.co/limizolaxa/Biajdhg/dutch_throwdown_buddy_edition.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://putesedesupelo.epizy.com/49336859753.pdfIn PDF document text
    • http://xejotapawadi.epizy.com/retro_arcade_games_apk.pdfIn PDF document text
    • http://xagewozutuke.epizy.com/21192309061.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_off0000da7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA7D 5744 bytes
SHA-256: 8dc2bb3b924e2c9caf8476447e3f8eaa77a42e9ad07cd687407957760c40f4f4
font_01_sfnt_off0000ee02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE02 10548 bytes
SHA-256: 453280cc2a24553db050cdd63af3d344fee3013271ad5d0c5d354449530e642a

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