Malicious PDF — malware analysis report

Static analysis result for SHA-256 6616ef98b5796fde…

MALICIOUS

PDF

68.0 KB Created: 2021-02-27 08:01:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: c9a3556ae4a6bbc6e9dc800bead872b7 SHA-1: f59b409bd41647aeb6943e51a50d3f85d1b06d4d SHA-256: 6616ef98b5796fde917a2da4c7d0a529291b9f7d40601186eb6e13e8f7f1a527
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • 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://maypoin.ru/award?keyword=asus+xonar+dgx+sound+card+installing PDF link annotation
    • http://instup.xyz/the_hunger_games_full_movie_free_download_in_hindiilpt5.pdfIn PDF document text
    • http://fruct.space/lawesamutupuzor1qwc4.pdfIn PDF document text
    • http://stavki-na-sport.site/human_anatomy_and_physiology_lab_manual_cat_version_13th_edition5zgoa.pdfIn PDF document text
    • https://cdn.sqhk.co/vilonunufuk/gjiihbc/ripekibojikazujabe.pdfIn PDF document text
    • https://cdn.sqhk.co/libibajuzumu/VujUqbl/surogofimomeru.pdfIn PDF document text
    • http://bbflowers.net/72435246060qts09.pdfIn PDF document text
    • http://tonagruz.ru/sunbeam_heated_blanket_blinkingc7y26.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzinipaz/YqReuAC/11966042165.pdfIn PDF document text
    • http://groshyk.site/jajolusezepifedudakomoba01h5.pdfIn PDF document text
    • https://simidolipuxemit.weebly.com/uploads/1/3/4/4/134486986/41d360f711daf6f.pdfIn PDF document text
    • http://1xbet-regi.site/90401194866ovcfp.pdfIn PDF document text
    • https://cdn.sqhk.co/gatuwaven/9iiIghm/trenches_ww1_today.pdfIn PDF document text
    • https://cdn.sqhk.co/xovujiroveg/cictjbL/webtoon_logo_font.pdfIn PDF document text
    • https://cdn.sqhk.co/nujorazaje/fgehfHs/best_compact_drum_kit_2019.pdfIn PDF document text
    • https://zugavugusalozi.weebly.com/uploads/1/3/0/7/130776271/detepamura.pdfIn PDF document text
    • https://cdn.sqhk.co/pugepavofu/cUjficu/86311278974.pdfIn PDF document text
    • https://gokulibom.weebly.com/uploads/1/3/4/2/134266198/rawesabivotol.pdfIn PDF document text
    • http://hookup756.fun/calculating_intake_and_output_worksheet_answersl1741.pdfIn PDF document text
    • https://jebelobuf.weebly.com/uploads/1/3/1/4/131452997/durosedugux-dofuzowiluwopux.pdfIn PDF document text
    • https://cdn.sqhk.co/losomilodip/iKg76Kf/59700377150.pdfIn PDF document text
    • http://inostrana.com/xatoxotebalofatulobuvto1by.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/muvazi/school_of_rock_2_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/horizontal_recyclerview_android_source_code.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_off0000cf1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF1F 5164 bytes
SHA-256: 3a9761b32c9b7d1704e98baed4e0f48338612ca210a24129b1f4ff3202374159
font_01_sfnt_off0000e0c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C0 9936 bytes
SHA-256: 46b5c28f7d4037461035e220455c6e7117ada10b5250bc9d84d084b4dc57dfd6

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