Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4ef879a5e82e47d…

MALICIOUS

PDF

73.7 KB Created: 2021-03-02 15:24:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7134decc4988c43bf9b3d7d196f410e9 SHA-1: 13b4f0b9374ba7a3726479b45e449e2a8b037e88 SHA-256: e4ef879a5e82e47dd701e6760798ed1964dfc3bc3a202daad6a10f3ca9bcdae9
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://jacksth.ru/award?keyword=d%2526d+warriors+of+the+eternal+sun+cheats PDF link annotation
    • http://www19216801.site/106015160497nlfc.pdfIn PDF document text
    • https://cdn.sqhk.co/pobijejok/ygdggT8/srs_light_acura.pdfIn PDF document text
    • http://urro-hu.com/sample_of_works_cited_page_mla_formatb2b2m.pdfIn PDF document text
    • http://shoop-ff.ru/does_costco_sell_immersion_blenders11ei0.pdfIn PDF document text
    • http://cosmicgig.com/momofuku_milk_bar_birthday_cake_truffles_recipe92vj2.pdfIn PDF document text
    • https://cdn.sqhk.co/mujowofapubi/lF4gjXJ/ballet_dancer_learns_hip_hop_movie.pdfIn PDF document text
    • https://cdn.sqhk.co/kelopifagisu/qwjfJsW/6098132754.pdfIn PDF document text
    • http://natbeach.space/28489156840ybsu8.pdfIn PDF document text
    • https://cdn.sqhk.co/tofatuxurejo/gjjjcr1/14319600615.pdfIn PDF document text
    • https://cdn.sqhk.co/bokirebi/hirWqhd/81898650467.pdfIn PDF document text
    • https://cdn.sqhk.co/duvapegoleva/Wibkhjd/jekojafalazefagotekabe.pdfIn PDF document text
    • http://vigastlens.xyz/granny_square_blanket_edging_pattern89w0k.pdfIn PDF document text
    • http://copyrightshelpcenter.com/bnmu_part_2_result_2017cqaw1.pdfIn PDF document text
    • http://indonesia2health.online/kendall_e_kylie_jenner_collectionl2dya.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/feborobegibew/lafinetebaxobu.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/zuxuluwuw.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/ireport_5._6_0_not_opening.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/virus_coloring_worksheet.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_off0000e924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE924 4156 bytes
SHA-256: d46272a35c141788e45a942f60d3ac75eba256168db5716376ff56f0f84bb3df
font_01_sfnt_off0000f752.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF752 10224 bytes
SHA-256: a8efb7cd18838ce46abab6f7d012ef6d9efe7f138eac835354ee5f2d6466c5c3