Malicious PDF — malware analysis report

Static analysis result for SHA-256 49ea6869bb623c4e…

MALICIOUS

PDF

77.0 KB Created: 2021-03-06 22:29:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 130746a1790ae7f6cbfd5dd86d7b800d SHA-1: 22e987757c3dffd7bfa27e377c65d6a970fa36e6 SHA-256: 49ea6869bb623c4e60e7f9fec54de30ee7f8fc87ed167000eb40ebb9ae78df17
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 0.9989

Heuristics 5

  • 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 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://dafemum.ru/wix?keyword=before+the+flood+documentary+worksheet PDF link annotation
    • http://bovewitavivebu.getenjoyment.net/renepaxi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374009/normal_5fe2b31617dd3.pdfIn PDF document text
    • http://nout-prokat.website/65672317302p96hl.pdfIn PDF document text
    • http://waranijovuv.sportsontheweb.net/20616252729.pdfIn PDF document text
    • http://mmmmmme.space/tobuzedivujawakexenekefu6acd2.pdfIn PDF document text
    • http://xufededubumavif.scienceontheweb.net/keputalomab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469824/normal_6026aa383f76b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367667/normal_5fd647c0e6acf.pdfIn PDF document text
    • http://jetinaxisodew.mypressonline.com/61432789685.pdfIn PDF document text
    • https://cdn.sqhk.co/zevolazezag/GjdpNql/party._io_game_online.pdfIn PDF document text
    • https://cdn.sqhk.co/riwifesineji/ijgejfZ/ball_balance_games_3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375195/normal_6024539176255.pdfIn PDF document text
    • https://cdn.sqhk.co/pibilebomek/Ahjjdhg/nail_salon_open_now_las_vegas.pdfIn PDF document text
    • http://fazudoladuvegig.22web.org/amesbury_archer_primary_school_uniform.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415322/normal_6002e2d52dee7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451028/normal_603abae3d5215.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485305/normal_603d2345cb60a.pdfIn PDF document text
    • https://cdn.sqhk.co/sosobita/gD2jbhg/22603178505.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411483/normal_602796e221a03.pdfIn PDF document text
    • https://cdn.sqhk.co/jofijoju/CkwihVu/zombie_runner_game_free_download.pdfIn PDF document text
    • http://zupuvotan.22web.org/yoga_mudrasana_wikipedia.pdfIn PDF document text
    • http://lemoxovuv.22web.org/bmw_e90_330d_service_schedule.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://purewowesajumu.myartsonline.com/takojewiwazenodu.pdfIn PDF document text
    • http://tezebidurob.epizy.com/probation_review_form_sample.pdfIn PDF document text
    • http://gozajogef.rf.gd/meselemekijore.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_off0000e24d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE24D 5404 bytes
SHA-256: c7b6cd8a3f39cd6a2956ab0355aa013b8b79d9bbbc6fe810a338c9278a4e9053
font_01_sfnt_off0000f49b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF49B 10424 bytes
SHA-256: 199bfe844c85bc6e4d94e2a9f0118d18d3a91b0b27a2771ee91811f1420f886a
font_02_sfnt_off00011833.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11833 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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