Malicious PDF — malware analysis report

Static analysis result for SHA-256 628df1d88f0adcbc…

MALICIOUS

PDF

72.7 KB Created: 2021-02-25 01:12:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1ab31cdda87d60038b75d233333eef1a SHA-1: a888ec9374f44d5044bfce6bce87e434aa28594f SHA-256: 628df1d88f0adcbca7f8bb41394ae5f928e942f4f38afd7f1119f8f145c37448
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/award?keyword=meade+autostar+pc+software PDF link annotation
    • https://roxasudafuj.weebly.com/uploads/1/3/0/7/130740166/surudoribatijirujufe.pdfIn PDF document text
    • https://cdn.sqhk.co/guwuweri/cibiegu/the_battle_dogs_cats_download_apk.pdfIn PDF document text
    • http://mevukavotidu.getenjoyment.net/6055100324.pdfIn PDF document text
    • https://negoladudovas.weebly.com/uploads/1/3/4/4/134456372/jifigagarepezeduvosi.pdfIn PDF document text
    • http://delinapod.mypressonline.com/73534693193.pdfIn PDF document text
    • https://pekowemorexoxuk.weebly.com/uploads/1/3/1/3/131380284/7562805.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377125/normal_601c785f3c22e.pdfIn PDF document text
    • http://winoxolupuvil.getenjoyment.net/can_you_bake_pizza_in_a_toaster_oven.pdfIn PDF document text
    • https://cdn.sqhk.co/vitimosugu/xIgcsha/deck_eleven_railroads_mod_apk_revdl.pdfIn PDF document text
    • https://cdn.sqhk.co/pubodegosog/wZ3hjhi/dino_race_track_walmart.pdfIn PDF document text
    • http://nesorus.mywebcommunity.org/how_to_program_dish_hopper_54.0_remote_to_tv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426953/normal_5ff9cf167f13c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365539/normal_5fdeb1140f648.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e006.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE006 5216 bytes
SHA-256: 353be33b8f15aeaeda677ab63bad5d2283e660b81b7185b3c0daf2e5d6a4572b
font_01_sfnt_off0000f1f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1F6 10476 bytes
SHA-256: 1350a2f2085ac2e9b14cfe61bdc9d8a30eabab94820d195764eeca05959b227d