Malicious PDF — malware analysis report

Static analysis result for SHA-256 799f7a7ffdb6497a…

MALICIOUS

PDF

76.7 KB Created: 2021-03-03 00:16:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 52e4aa1e8f791c8f36dce5d4bfbe35ea SHA-1: 38804c506f3ac96aa546c980ad67dc85df8a9c1b SHA-256: 799f7a7ffdb6497a4dcb39426615366fa6161434123f28e14c2c97fd66df558a
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://golowaki.ru/wix?keyword=go+math+book+grade+5+online PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369643/normal_60020cf052947.pdfIn PDF document text
    • http://keburej.22web.org/birthday_book_astrology_secret_language.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427498/normal_5fdd835a454e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426687/normal_5fd62c2420604.pdfIn PDF document text
    • http://kinemulawaw.sportsontheweb.net/how_much_oil_does_a_2006_honda_odyssey_take.pdfIn PDF document text
    • http://xifadezuzurap.medianewsonline.com/puxoxosal.pdfIn PDF document text
    • https://lilufegat.weebly.com/uploads/1/3/5/9/135965666/wipuj-fazusubokesid.pdfIn PDF document text
    • https://cdn.sqhk.co/pujapipiwat/ghgiji6/3d_snake_game_unity.pdfIn PDF document text
    • https://kowuzuworos.weebly.com/uploads/1/3/2/6/132682574/5222599.pdfIn PDF document text
    • https://cdn.sqhk.co/mewivupa/jce5fIR/budiposenapagimexerobag.pdfIn PDF document text
    • https://cdn.sqhk.co/josipinu/cx9xcjD/5333133304.pdfIn PDF document text
    • http://vulefuxudonad.22web.org/which_is_better_ezgo_txt_or_rxv.pdfIn PDF document text
    • http://buzovanukoziba.22web.org/affirmative_formal_command_of_jugar.pdfIn PDF document text
    • https://cdn.sqhk.co/vigamodijek/gq3giWC/draw_car_3d_mod_apk_unlimited_money.pdfIn PDF document text
    • http://xopivodez.22web.org/42630973025.pdfIn PDF document text
    • http://rowowevu.mypressonline.com/labuzizati.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vufobaratoja.epizy.com/dahua_cctv_footage.pdfIn PDF document text
    • http://vigavanoxe.onlinewebshop.net/les_miserables_songs_youtube_i_dreamed_a_dream.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_off0000f021.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF021 5420 bytes
SHA-256: 3247d8cefca9582fec1b9c921da9f8fba963b8db5fd57b8085bdc1c03b484dfc
font_01_sfnt_off00010260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10260 10476 bytes
SHA-256: 9e97202f694b774e040735c673df076c4bf0f407e9f6e664be3b665d7d8a5f34