Malicious PDF — malware analysis report

Static analysis result for SHA-256 386f0465709d4f29…

MALICIOUS

PDF

76.6 KB Created: 2021-03-20 05:56:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 47c8eb871a966634dc8a650c1a02673b SHA-1: 5032fec6a1ea640a0d1f5892e5f6541b9ed4e2da SHA-256: 386f0465709d4f2940c5b57d4aace37e3f563eb3f383fdd950b1aac6e7bf5be0
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://baarspo.ru/strik?utm_term=ps4+gold+headset+not+recognized PDF link annotation
    • http://fullhp.info/rulesetukixikapesmj30t.pdfIn PDF document text
    • https://cdn.sqhk.co/gevanadu/1IDZXib/mega_ramp_super_hero_crazy_ragdoll_fallen.pdfIn PDF document text
    • https://cdn.sqhk.co/fofodafexadu/2D1uKvU/fesarovopuzakixelozido.pdfIn PDF document text
    • http://blaugrana.ru/maxurexavozo5f4jx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465905/normal_5ff52125bb53b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377115/normal_6010a317216df.pdfIn PDF document text
    • http://cparta.moscow/what_is_the_complete_subject_mean80kcx.pdfIn PDF document text
    • https://cdn.sqhk.co/zewesifadeka/hieidjd/aeroxchange_2020_agenda.pdfIn PDF document text
    • https://jirilerimu.weebly.com/uploads/1/3/5/9/135967849/024cc7.pdfIn PDF document text
    • https://zojufagilazit.weebly.com/uploads/1/3/0/9/130969654/ruxexumixo-fifomegusa-mawulonojex-jumojimamuwa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475859/normal_6028b31c1e432.pdfIn PDF document text
    • http://momentshop.website/snowfight._io_crazy_gamesm806h.pdfIn PDF document text
    • https://tunozuranoba.weebly.com/uploads/1/3/5/3/135316660/kavofogo-wikigizir-vobanap-dupuma.pdfIn PDF document text
    • http://fazojum.66ghz.com/reporting_child_protection_concerns_victoria.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/381fee37-fa19-487c-a8b4-7ce282fad49e/aba_model_rules_1.13.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a0d0339-c4ac-4934-9869-76b680586f0e/saxon_math_intermediate_4_workbook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8faa910b-e2fb-427d-a4b8-4a5b936d8624/38741564761.pdfIn PDF document text
    • http://fodiwivovekuvut.epizy.com/bihar_daroga_previous_year_question_paper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44153800-7f00-4853-b4f4-ec98c8ab1630/keto_recipe_book_free.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_off0000ee4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE4B 5340 bytes
SHA-256: 0481f065a3fd57c0331b5ddcda3cc3a62a00ff7ab4737cc2cc02c8f0bc3fbb0e
font_01_sfnt_off0001007c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1007C 10864 bytes
SHA-256: 804afc9c00dcaf79c2955db4f912c7a15e1afcdf35d8b091e1fb621bd9fd2f0e

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