Malicious PDF — malware analysis report

Static analysis result for SHA-256 b83f7ad0354d6f8f…

MALICIOUS

PDF

68.9 KB Created: 2021-02-13 10:54:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: fa6b10eeb2d391c217c8372905902bd7 SHA-1: 99964d98136fb439e1c8e3950cb774a68a23447d SHA-256: b83f7ad0354d6f8f7c35ac6c41b0fad6b6d80693451f09f3267b687931edade2
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://bologen.ru/123?utm_term=check+if+key+exists+in+dictionary+python PDF link annotation
    • http://opendouche.xyz/tokosekozodal6dzk3.pdfIn PDF document text
    • https://cdn.sqhk.co/ragojagef/djaoZjd/true_cooking_master_boy_episode_13.pdfIn PDF document text
    • https://cdn.sqhk.co/numovasovev/hidChgA/verizon_roadside_assistance_terms_and_conditions.pdfIn PDF document text
    • https://cdn.sqhk.co/wisulekekij/jaXjslS/ruxakisevibovegoxejev.pdfIn PDF document text
    • https://pusexijubod.weebly.com/uploads/1/3/5/2/135296384/gukage.pdfIn PDF document text
    • http://pestore.pro/morofekadevuvuraxuxutorom2l9zc.pdfIn PDF document text
    • https://cdn.sqhk.co/guledijuxi/jIEhehj/cruise_lines_stock_market.pdfIn PDF document text
    • https://cdn.sqhk.co/tarolaser/Q3jbjcu/dynamic_duo_bigwinn_lyrics.pdfIn PDF document text
    • https://tinozuxitijerel.weebly.com/uploads/1/3/4/5/134528375/potuwuxepevur-lewomid.pdfIn PDF document text
    • http://ottics.ru/finding_dory_movie_free_in_tamil0gap3.pdfIn PDF document text
    • http://amaryllis.space/nipamotolulobemopemifiqz39n.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/viromibukoleliw/360_antivirus_apk_old_version.pdfIn PDF document text
    • http://xuxusemo.epizy.com/google_docs_sheets_and_slides_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/kafises/acknowledgement_slip_template.pdfIn PDF document text
    • http://bosilesovelus.rf.gd/levojolifiwo.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/how_to_delete_all_guides_in_photoshop.pdfIn PDF document text
    • http://fobapisarut.epizy.com/alphazero_vs_stockfish_2018_pgn.pdfIn PDF document text
    • http://bemuvubovewe.epizy.com/lerekiduvegadokazemasade.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_off0000cef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEF8 5352 bytes
SHA-256: de24645681f36251dd949bfd3ec780aa84c83e89400fdcccee027f1efe39b013
font_01_sfnt_off0000e136.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE136 10848 bytes
SHA-256: aa101345ec155ec26bf54658fc776152af404e24a0575397e10041e10fcd9d39