Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c1b58492959d2b4…

MALICIOUS

PDF

72.5 KB Created: 2021-03-03 10:09:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 484251e1bdd214084dca3aad35c89367 SHA-1: dac9e98d9d361f9a786b0538ca273f072cca81b4 SHA-256: 4c1b58492959d2b4dc39509470b5591ee63ae7a06ad5f704dd781f72856c7a10
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xajibur.ru/award?keyword=le+petit+prince+rose+symbol PDF link annotation
    • http://towufato.mywebcommunity.org/what_are_e_m_service_codes.pdfIn PDF document text
    • https://cdn.sqhk.co/rosavuzezig/jhMhaYk/tripp_trapp_baby_cushion_soft_sprinkle.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4504788/normal_602140602778e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468253/normal_5fd911ffc85c5.pdfIn PDF document text
    • http://jekeluxuto.mywebcommunity.org/gedakuvesifoxe.pdfIn PDF document text
    • http://bapatavusirave.mygamesonline.org/chemistry_ionic_compounds_worksheet_answers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468812/normal_603c843145574.pdfIn PDF document text
    • http://gojawufeki.getenjoyment.net/how_to_find_natural_log_using_log_table.pdfIn PDF document text
    • http://sabumow.mygamesonline.org/6259253680.pdfIn PDF document text
    • https://cdn.sqhk.co/suwezuzifu/hdgihzJ/facebook_marketplace_local_pickup_only.pdfIn PDF document text
    • https://cdn.sqhk.co/ritasuxa/hggc75r/38367176680.pdfIn PDF document text
    • https://cdn.sqhk.co/gobajejuz/ehcLYji/29382050712.pdfIn PDF document text
    • https://cdn.sqhk.co/podadoxafa/egghgko/34247522951.pdfIn PDF document text
    • https://cdn.sqhk.co/komajekolino/uibLjfV/rhythm_games_dance_app.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zorijefugixor.atwebpages.com/how_do_you_put_the_tape_in_a_brother_p_touch_label_maker.pdfIn PDF document text
    • http://mubodadekutaxim.atwebpages.com/fumiweromixitinimokux.pdfIn PDF document text
    • http://zawuzujuw.epizy.com/chocolate_cake_birthday_images.pdfIn PDF document text
    • http://wigexoli.rf.gd/40359743492.pdfIn PDF document text
    • http://zibakogemigana.rf.gd/jelosudoropi.pdfIn PDF document text
    • http://dobategasugano.epizy.com/stephen_king_books_ranked_by_length.pdfIn PDF document text
    • http://favuzokusom.rf.gd/yahoo_email_can_t_attachments.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_off0000e14e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE14E 5052 bytes
SHA-256: e541a3ac4840bde75f8a4fe53a9bfaba7fa2c1a0390403ff19e6564655e38b17
font_01_sfnt_off0000f272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF272 9948 bytes
SHA-256: d4441fdabae4e89fb9dfe8f376c5cbe970f1571fa266e897080c47e04afe6350

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