Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba0c13fe2b3230e1…

MALICIOUS

PDF

68.2 KB Created: 2021-02-25 16:30:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1ec626524b1c6aff5175c1c5168168d8 SHA-1: f7e81e37982b7d5b943a6031f00bcaa83c8211d1 SHA-256: ba0c13fe2b3230e1d8244cfe530e4c0fb9e590a30cf6ec0c2628a020b328c17a
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/award?keyword=does+cvs+do+blood+pressure+checks In PDF document text
    • https://cdn.sqhk.co/novozefox/cPnWjaI/island_tribe_4_online.pdfIn PDF document text
    • https://cdn.sqhk.co/wajerewuwer/2jbihjh/best_personal_alarm_to_carry.pdfIn PDF document text
    • https://kukegogefip.weebly.com/uploads/1/3/2/6/132681459/ce9fe8750.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450152/normal_60029800d8e44.pdfIn PDF document text
    • https://fefumuvujudadi.weebly.com/uploads/1/3/1/6/131606087/nazega_lufasadosowis_nixubim_runanemifufivi.pdfIn PDF document text
    • https://benefirezunaxo.weebly.com/uploads/1/3/4/8/134864331/479ca035.pdfIn PDF document text
    • https://cdn.sqhk.co/mopomotop/7x3Yogd/98103068449.pdfIn PDF document text
    • https://cdn.sqhk.co/vugiboba/jahdhdv/57569487530.pdfIn PDF document text
    • https://mejodedasebedo.weebly.com/uploads/1/3/4/7/134725949/befedunujamoza_jelukawej_pubukofek_towugurebijar.pdfIn PDF document text
    • http://wetikufuwigiwox.iblogger.org/anhalteweg_formel_berechnen.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pesaforasipu.epizy.com/tawamu.pdfIn PDF document text
    • http://lusitenaburasow.epizy.com/indian_astrology_learning_book.pdfIn PDF document text
    • http://luwegovufa.epizy.com/bragi_the_headphone_manual.pdfIn PDF document text
    • http://zuxekesimulir.epizy.com/55606477010.pdfIn PDF document text
    • http://nadadeze.epizy.com/3645794404.pdfIn PDF document text
    • http://resuzebapaluga.rf.gd/best_day_of_my_life_karaoke.pdfIn PDF document text
    • http://kusuganuxe.epizy.com/nordictrack_x7i_parts.pdfIn PDF document text
    • http://xifedesekelogu.epizy.com/java_32_bit_windows_10.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_off0000d034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD034 5216 bytes
SHA-256: 2f128204bc5ec4a4fb24ca0b5b60bd801ba6d9ab81545b84115d282571766ca0
font_01_sfnt_off0000e1ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1ED 9912 bytes
SHA-256: 7e51934769d3f08bc29a4537c29d51051f7d2836aaab435527d945e9b7f633a1

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