Malicious PDF — malware analysis report

Static analysis result for SHA-256 24cbfea6078072fa…

MALICIOUS

PDF

67.1 KB Created: 2021-02-14 05:20:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d33b19d0f167c57d6d9ded6d4b58cd64 SHA-1: 885770a945544aca3bf695c71dae0ee47ff0d020 SHA-256: 24cbfea6078072faea954dd95bb9b081d82dfc60cc34004e6da4b04c4d5adaf1
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://jottigo.ru/wix?keyword=math+accelerated+grade+7+answer+key PDF link annotation
    • http://aarbuz.space/95985615644x1wob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495246/normal_6024fe087239b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409239/normal_600e8b36611ad.pdfIn PDF document text
    • http://mukoxadetovewo.66ghz.com/70590331574.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494673/normal_601c7ae5e0f29.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393190/normal_5fe88151aefc8.pdfIn PDF document text
    • https://cdn.sqhk.co/wodabakope/gdi1bgc/deer_hunting_sniper_shooting_game_download.pdfIn PDF document text
    • http://axecheat1.xyz/harmonize_niteke_lyricspn1ke.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://moberasar.rf.gd/building_design_software_for_mac_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sewamos/telugu_wap_chitralahari_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/logo_bsnp_png.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/7851573538.pdfIn PDF document text
    • http://nifiloxoburufi.rf.gd/kumipakawugodul.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bd37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD37 5176 bytes
SHA-256: b53f8393f12cdeff67e60adf6ea9511f481c45dc7d1f5a62185e384b8b04670d
font_01_sfnt_off0000cee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEE2 10040 bytes
SHA-256: 91692677ade60e8e26d9b2d6781f5f15403071f710bc51f162d52686ce32009c
font_02_sfnt_off0000f145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF145 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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