Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b5259abb786e22d…

MALICIOUS

PDF

73.2 KB Created: 2021-03-11 19:16:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b2e23cb0b64a30242ea44628f38f1bc8 SHA-1: ae359cedcb8e600994aec07783dd51173fb106a0 SHA-256: 7b5259abb786e22dd39cb0155a0ea3d22a7b98c36efc1ab109a4351895989b14
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://dugedepap.ru/wix?keyword=blow+up+phone+text+free PDF link annotation
    • http://discout.online/10179212277kv12k.pdfIn PDF document text
    • https://bibatajikoxego.weebly.com/uploads/1/3/5/3/135315017/544a1d595.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415756/normal_5fe75c32567ee.pdfIn PDF document text
    • http://sravniproxy.info/paguz5xeyv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384652/normal_602f6806c0ef5.pdfIn PDF document text
    • https://gepulepefuxogu.weebly.com/uploads/1/3/2/6/132683228/wafakeb_mitusepulag_kirobawoxeme_nanovupikofav.pdfIn PDF document text
    • https://vulewerogoxo.weebly.com/uploads/1/3/4/5/134507491/5168663.pdfIn PDF document text
    • http://naturaleone.space/dolphin_emulator_pc_freeh75vw.pdfIn PDF document text
    • http://russianpatentexpert.com/jesus_calling_devotional_apphjv3b.pdfIn PDF document text
    • http://budokudepa.scienceontheweb.net/who_makes_diehard_gold_batteries.pdfIn PDF document text
    • http://keto-s1.com/guided_discovery_learningqqo3a.pdfIn PDF document text
    • https://babekezuxosonat.weebly.com/uploads/1/3/5/3/135327288/d80231a19a85.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454541/normal_6006d75a7928c.pdfIn PDF document text
    • http://kushtanash.ru/buddhism_books_amazon67b5l.pdfIn PDF document text
    • http://onenature.space/julagalimufmwf8d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472793/normal_5fd099cb0151d.pdfIn PDF document text
    • https://fezuliba.weebly.com/uploads/1/3/6/0/136056139/gabitixemu.pdfIn PDF document text
    • http://gmetry.online/how_to_use_ergo_360_infant_insert5ei4i.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d9f3d91-720e-4a71-803b-e0ca735e3314/are_starcraft_boats_any_good.pdfIn PDF document text
    • http://gupatevefojip.myartsonline.com/bio_data_form_telugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a65851c-0d1e-488a-b9b5-9c734a965d04/machine_learning_python_coursera_github.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/532ebee0-c36c-4744-83ba-9fb6e5e6b3e6/71949129618.pdfIn PDF document text
    • http://lejiletuvasipib.onlinewebshop.net/new_practical_chinese_reader_vol.2_-_textbook.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_off0000e3c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C4 4808 bytes
SHA-256: c8a7d5c5bf9ff6e68fa325805d3fadda59b0b7bf756853761444c741c57dab4d
font_01_sfnt_off0000f438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF438 10320 bytes
SHA-256: b3d0b119cd29c68ada08d767aed71b9c881b69a19996fd695085f4eebb37bbb0