Malicious PDF — malware analysis report

Static analysis result for SHA-256 028f1b1a450c2f7f…

MALICIOUS

PDF

81.4 KB Created: 2021-03-03 00:27:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2cc0c3dfa82b9a6980588369595e0fc9 SHA-1: 6cf30e04555de052ce36c68c95dcde925d879542 SHA-256: 028f1b1a450c2f7f77af6958142219073a0ad2f182617578a456f9026cf3fa73
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://baarspo.ru/wix?keyword=the+lorax+worksheet+answers PDF link annotation
    • https://cdn.sqhk.co/siganewita/jiicWhg/sopalalu.pdfIn PDF document text
    • http://rugegav.mywebcommunity.org/lowrance_elite-7_ti2_met_active_imaging_3-in-1_transducer.pdfIn PDF document text
    • http://rejemezurufoveg.mywebcommunity.org/attack_on_titan_manga_end_date.pdfIn PDF document text
    • https://cdn.sqhk.co/gejupajo/hdqLDgj/download_game_slidey_block_puzzle_jewel_uptodown.pdfIn PDF document text
    • http://idclick.cash/busowunupavabavezikamo4xz6s.pdfIn PDF document text
    • https://cdn.sqhk.co/kezomerameki/uuGZgij/barbecue_sauce_calories.pdfIn PDF document text
    • https://cdn.sqhk.co/zutomina/bSgeMr9/49350813644.pdfIn PDF document text
    • https://bemazoveber.weebly.com/uploads/1/3/4/5/134512295/sirelupotozoj.pdfIn PDF document text
    • http://dapodulasopo.iblogger.org/ferulic_acid_derivatives.pdfIn PDF document text
    • https://cdn.sqhk.co/bupewazadufa/ijMnEjb/star_wars_kotor_cheats_android.pdfIn PDF document text
    • http://bilkan.fun/sonir5s7ib.pdfIn PDF document text
    • http://redita.fun/90164143658p3fch.pdfIn PDF document text
    • http://beviluxenumiliv.mywebcommunity.org/how_to_find_google_play_store_on_sony_bravia_tv.pdfIn PDF document text
    • http://gomededow.22web.org/ethiopian_orthodox_bible_in_english_81.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gonegexunu.myartsonline.com/formato_para_minuta_de_acuerdos.pdfIn PDF document text
    • http://nujexaraxeb.epizy.com/studio_background_full_hd_free.pdfIn PDF document text
    • http://pawesew.epizy.com/bise_sargodha_1st_year_date_sheet_2019.pdfIn PDF document text
    • http://pabovabavuwemet.rf.gd/xibovi.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_off000102f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102F9 4948 bytes
SHA-256: 0afcdfcff64e7109977507672c235120f4615d5f631dd3ca848395cfe5e05c1b
font_01_sfnt_off000113d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113D7 10752 bytes
SHA-256: bd4fd89521ec86e62a194caf39555841011292548f3c8ee410e4dfa919bc7070