Malicious PDF — malware analysis report

Static analysis result for SHA-256 e98c08c9f95c5e3c…

MALICIOUS

PDF

75.3 KB Created: 2021-03-22 10:16:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ab76daec3a072e67d6037d7875a4d282 SHA-1: f2dd43378230f26c777fc9223c3dd2aa0975e497 SHA-256: e98c08c9f95c5e3cc9edddce62a28539c874afba49620fe19cf2d56ae0d2be89
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/strik?utm_term=what+is+the+balance+sheet+identity In PDF document text
    • http://vodabutopidaru.getenjoyment.net/laler.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366620/normal_6033db235dd74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422161/normal_600cb72995b57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455198/normal_6039221ede34e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447649/normal_5ff9b7c1dceb2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370278/normal_5fc89d7c58301.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402932/normal_600263c94a3f9.pdfIn PDF document text
    • http://nexofozupugasi.mywebcommunity.org/sunolosemejika.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495526/normal_5fe4a8b631781.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409421/normal_6054c25497f39.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369149/normal_6003902aca59d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478968/normal_603aef1ed9301.pdfIn PDF document text
    • http://sipataj.sportsontheweb.net/dungeons_and_dragons_online_playable_races.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422371/normal_5ffc1b78c45b8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470228/normal_5ff29fc9e70c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401994/normal_601689fc3cd35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471114/normal_6028aa49f07a9.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/4a0df2fe-7277-4201-8ef3-6c1cd66db839/what_kind_of_gas_does_a_5.7_hemi_take.pdfIn PDF document text
    • http://rosevasejila.myartsonline.com/losakisiluv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df65d1da-9517-489b-97bf-98fd81914d8d/vtr_secrets_of_the_covenants.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a43db08a-258a-43f8-9862-070f055dcea0/using_airport_express_base_station_extend_wireless_network.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3daf6257-0337-4d57-a444-64f2d3b3fee0/79402716992.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40b7624c-3f75-4a20-b91b-55a789fb2fa0/74837047228.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_off0000eaf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF3 5188 bytes
SHA-256: 0cc1ed5bc728669ec5be51dcfe945e79174943394ef8c0b7a03ce7c87e631a41
font_01_sfnt_off0000fca7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA7 10188 bytes
SHA-256: 104c70720b1b2338c8a27af77a6693e596baad66b676708757a42a13949dcef8

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