Malicious PDF — malware analysis report

Static analysis result for SHA-256 b73c6f451c4f8e92…

MALICIOUS

PDF

68.0 KB Created: 2021-02-21 10:00:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 17bed94cc422c69c2bd6a973cb29be8d SHA-1: 756d3838db3e43a02b87d0960c29e0b7c570cf2c SHA-256: b73c6f451c4f8e92c8b16f3b6e4cc41a4ab80aa8c06cfb3f71aa1414b9248c72
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://jottigo.ru/wix?keyword=common+objects+pictures PDF link annotation
    • https://dubelaxelafef.weebly.com/uploads/1/3/1/1/131164372/bagadilubitebojuteje.pdfIn PDF document text
    • http://phrensy.co/consonant_blend_worksheets_for_grade_21dxzc.pdfIn PDF document text
    • https://mofivekirupu.weebly.com/uploads/1/3/2/7/132740685/a5d6448b0577fc.pdfIn PDF document text
    • https://dujuwugad.weebly.com/uploads/1/3/4/7/134721680/vepepik.pdfIn PDF document text
    • http://adyga.site/694804550493orna.pdfIn PDF document text
    • http://hackins.site/biblia_dios_habla_hoy_con_deuterocanonicosmvpdc.pdfIn PDF document text
    • http://reduslimitalia-oficial.site/hashtags_for_likes_on_instagram_videosmhs0d.pdfIn PDF document text
    • https://cdn.sqhk.co/serodozire/wIslpii/flying_car_transport_simulator_hack_download.pdfIn PDF document text
    • http://artrosil.xyz/84741861211tdkth.pdfIn PDF document text
    • https://xurozakewera.weebly.com/uploads/1/3/1/4/131414240/5196453.pdfIn PDF document text
    • https://cdn.sqhk.co/xupebasolaw/f1hPpKe/21317503490.pdfIn PDF document text
    • http://taptopbot.com/addition_with_regrouping_coloring_worksheetsug73z.pdfIn PDF document text
    • http://love-your-lips.online/96767645581wsm6c.pdfIn PDF document text
    • https://cdn.sqhk.co/numavagoko/hdjjBhh/motogp_television_schedule_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/fujigugi/eVgiicw/jetedatojufolebunoso.pdfIn PDF document text
    • https://cdn.sqhk.co/tejikeluz/kibzO97/43668957805.pdfIn PDF document text
    • http://znasila.ru/lazafurezozemexukomarofiuafhp.pdfIn PDF document text
    • http://file-id.ru/aces_high_march_sheet_musicbhcm0.pdfIn PDF document text
    • http://dkmz2.club/eventide_timefactor_updateqkbby.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c312.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC312 4960 bytes
SHA-256: 22c5596c093fc4830113c7d766875a1be5eb988b703ad5440b1e5870b6b22c2f
font_01_sfnt_off0000d3d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D9 14384 bytes
SHA-256: 33b00652fc76fd66e1b29cd8aee94ba4212beb19c38b1cd32a7d10f86a91d6e3