Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d61571273b3c67e…

MALICIOUS

PDF

79.8 KB Created: 2021-02-22 07:20:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 248c957f96ef3b2b4a7c14045e90a526 SHA-1: 8fd0f41178f221799d771b07f2790d5e1588cde9 SHA-256: 4d61571273b3c67e3ae6c257d314595def605fa0f0ec2c6c4f57d1e0afa28bcb
126 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
  • 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://druttle.ru/wix?keyword=magic+school+bus+water+cycle+worksheet+pdf PDF link annotation
    • https://teraxumafelenug.weebly.com/uploads/1/3/4/7/134747654/demuwuvudodet-tegojigaz-xukemam-pikijupepatem.pdfIn PDF document text
    • http://daimontimur.org/revolut_business_account_openingfpcqx.pdfIn PDF document text
    • http://es50off.pro/27115534183omy7i.pdfIn PDF document text
    • http://yyyyyyhhhhh.space/94274840969txli2.pdfIn PDF document text
    • http://japancar-sib.ru/drag_car_racing_gamesuzpfs.pdfIn PDF document text
    • https://cdn.sqhk.co/ripalufix/Agjgiij/cross_stitching_for_beginners_youtube.pdfIn PDF document text
    • https://cdn.sqhk.co/rogenujudita/idgdijf/ding_dong_merrily_on_high_music_download.pdfIn PDF document text
    • https://vimexizud.weebly.com/uploads/1/3/4/7/134755563/linulovileniri.pdfIn PDF document text
    • http://the-english-temple.com/starfish_classroom_door2qpxw.pdfIn PDF document text
    • http://denizan.com/reporting_excess_401_k_deferralstfhi1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nanaxaj.rf.gd/voneleseno.pdfIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/aadhar_card_by_fingerprint_software.pdfIn PDF document text
    • http://tixixomevupot.rf.gd/59678290078.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/bum_bum_bole_song_320kbps.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/english_writing_book.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_off0000fa47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA47 5820 bytes
SHA-256: c70b537f2c1223d69c8058d6c53b52381306bda77f70d8de3ef7356d98a56611
font_01_sfnt_off00010e34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E34 10472 bytes
SHA-256: d1090c58fa82ed4b42a01747e93f37876b03958be374e541d3c06b4138ac161f