Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc138e466a6c4faf…

MALICIOUS

PDF

72.2 KB Created: 2021-03-08 12:27:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b8ec0c2c202f39f6f19d20f3c9de1325 SHA-1: ac3519323f6ab293d2f76194a485ac3c96ab15f0 SHA-256: bc138e466a6c4faf07336b487fa079ee98d16fc479e749b6498bcdff733f0520
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • 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://mezovuduw.ru/award?keyword=another+one+bites+the+dust+guitar+tab+pdf PDF link annotation
    • https://cdn.sqhk.co/zitiwofiru/EhbifAd/dubai_time_to_pst.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456660/normal_6000598586656.pdfIn PDF document text
    • https://cdn.sqhk.co/nuwobevina/eidiehb/go_street_view_apps.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385437/normal_5fde32b0c85f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459180/normal_5fe77547be0bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473632/normal_604317edbce59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485445/normal_6037bf0943a25.pdfIn PDF document text
    • https://cdn.sqhk.co/vodadavubex/idibE77/17407321706.pdfIn PDF document text
    • https://cdn.sqhk.co/kapapomabu/hgLufgf/game_champion_words.pdfIn PDF document text
    • https://cdn.sqhk.co/tabotewo/iaxEghf/2012_chevy_impala_ltz_manual.pdfIn PDF document text
    • http://memisada.mygamesonline.org/59936925383.pdfIn PDF document text
    • http://sosuziba.mypressonline.com/54351941751.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://91e55214-10ad-44cf-a10a-60a9392df58b.filesusr.com/ugd/e1c37d_3ce36cef3df8428492d6780d704f5eae.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3f79465-8c52-48e1-8dfb-3f6ecfc7b9f5/65761803632.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0a4f837-51d1-431b-8990-83b964ccf385/rumamugalitabemefuziruzul.pdfIn PDF document text
    • http://jadivepijuga.myartsonline.com/manual_terapia_cognitivo_conductual_ansiedad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c0e371f-03e3-40d8-bb9c-79d8d8afbbfd/how_many_hours_will_a_honda_eu2000i_last.pdfIn PDF document text
    • https://s3.amazonaws.com/batiku/audio_songs_list.pdfIn PDF document text
    • https://f405dec1-7f90-4f4c-a861-5286f67d0127.filesusr.com/ugd/ab922d_fe0cf4800d924704a4a3c51d3e534cad.pdf?index=trueIn PDF document text
    • http://sukokovevaz.atwebpages.com/wirufowaxav.pdfIn PDF document text
    • https://ffcd7f67-9b43-45c2-8e44-b15cca9583b8.filesusr.com/ugd/48bf55_095b2544b6d0435cb23b3cca4e0643c5.pdf?index=trueIn PDF document text
    • https://85ed388a-52e0-4e79-9737-9d4b769dda71.filesusr.com/ugd/bb10c5_dd579474b6324ce3b91a1f497aa923ce.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lomogas/euphemism_worksheets_english.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_off0000d284.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD284 5400 bytes
SHA-256: 674cae333d6ea594f632ef6a069f4e792ed388600a6c550cac679f7e2fac4132
font_01_sfnt_off0000e4d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D8 13912 bytes
SHA-256: 27b0697730057548f1cb8b9aedc3bcebd92ba55eaa28d618efd074cab141085f