Malicious PDF — malware analysis report

Static analysis result for SHA-256 110744d26d293a8c…

MALICIOUS

PDF

70.5 KB Created: 2021-02-28 08:32:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 4bf9f1c541c72b9b0fce4dae11cd6294 SHA-1: 04e9811b3df85847fb9aebfa99eb22f4d8627e10 SHA-256: 110744d26d293a8ccfd1dd67a6d03c4e09e02224883e765bf55696e5e2e1c472
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://kuzutuzo.ru/award?keyword=how+to+get+a+free+pearson+access+code PDF link annotation
    • https://cdn.sqhk.co/janimivaxo/kgi8igj/followers_hashtags_instagram_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/dedogupazib/gghuFge/81515332036.pdfIn PDF document text
    • http://lebedugipul.mywebcommunity.org/bowajijudibikeb.pdfIn PDF document text
    • https://cdn.sqhk.co/fegojujor/UTigghp/lojidedalotefoloximuxalu.pdfIn PDF document text
    • https://cdn.sqhk.co/jukelifawap/jdghicv/zombie_world_war_z_full_movie_2013.pdfIn PDF document text
    • http://zipubezexupoka.mywebcommunity.org/important_events_from_1700_to_1800.pdfIn PDF document text
    • https://cdn.sqhk.co/bidogefapo/dijh4ij/21468844090.pdfIn PDF document text
    • https://tesajezu.weebly.com/uploads/1/3/1/4/131452821/35c71ad20cc0.pdfIn PDF document text
    • https://vulodimov.weebly.com/uploads/1/3/4/8/134880101/570b138045af94c.pdfIn PDF document text
    • https://cdn.sqhk.co/vixawutozama/ijDidij/big_rig_truck_show_chippewa_falls.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375361/normal_5ff52b11db36f.pdfIn PDF document text
    • https://fazijexin.weebly.com/uploads/1/3/2/7/132741066/fezorubaxomap_velizidepij_rekes_nuxopulesu.pdfIn PDF document text
    • https://cdn.sqhk.co/wupetutigo/kYYLghP/10699896256.pdfIn PDF document text
    • https://cdn.sqhk.co/lunilageruvu/Ugha9AL/zofituka.pdfIn PDF document text
    • https://cdn.sqhk.co/bumotinidopi/gdjsIhf/lekopimebilomekinikadut.pdfIn PDF document text
    • http://tufofol.medianewsonline.com/how_to_get_bigger_legs_with_bodyweight.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zujexig.epizy.com/android_17_power_level_dbs.pdfIn PDF document text
    • http://weparaxopulo.atwebpages.com/are_studio_beats_better_than_solo.pdfIn PDF document text
    • http://wozimape.onlinewebshop.net/43037864454.pdfIn PDF document text
    • http://gexepitirunagu.rf.gd/defoxinavinunomuxenit.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_off0000d7e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7E5 5344 bytes
SHA-256: edbda79a39da9f5e6f9a755da04ba3b4fa5f1cae27e56290a933819d6466cb9d
font_01_sfnt_off0000ea3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA3E 10092 bytes
SHA-256: 344eacd2ad44c6eea38b3cfeeec4d77f189f731899020f4cb8dbccd4216aec52

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