Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7925b75ce30799f…

MALICIOUS

PDF

79.1 KB Created: 2021-05-29 00:54:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: fca9b6f60cf14f4dae4d8ff402f27a57 SHA-1: 3cfa23b034a437870fa17e3aab274b3bb31b5d4e SHA-256: d7925b75ce30799fc7e81fa1655f82d451590f089596384630bbd30d219bc48a
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external links, including one pointing to 'ponafet.ru', suggesting a link farm or phishing lure. The document body, though heavily obfuscated, contains text related to 'read between the lines answers level 13', implying a deceptive pretext to drive traffic to malicious sites.

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 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.
  • 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://ponafet.ru/123?utm_term=read+between+the+lines+answers+level+13 PDF link annotation
    • https://nitowapesapu.weebly.com/uploads/1/3/4/4/134442046/jotez-nureselun.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460476/normal_6003806163f69.pdfIn PDF document text
    • https://monivewuvafa.weebly.com/uploads/1/3/4/0/134096064/gilonot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465393/normal_600db7c52e20c.pdfIn PDF document text
    • https://poliradu.weebly.com/uploads/1/3/5/9/135991332/wotob.pdfIn PDF document text
    • https://vulajavup.weebly.com/uploads/1/3/4/6/134683256/b028573f73441f.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/20feb3a4-9174-4a35-83c1-52e322111cfe/5th_grade_reading_books.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a55357c9-8b93-48ee-992b-bb22863b62ee/35242154631.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85eba699-d7e3-4638-ac67-2c7a8bcdaa3c/dibujos_para_colorear_con_el_abecedario.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23387c0a-41c5-464a-adac-7d1d25cad915/neurolinguistische_programmierung_wiki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8370562-fff6-4d9b-b03d-5273d432ff52/adobe_premiere_pro_2.0.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b564eaa3-663c-4874-856b-660d180f675f/88672338529.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4bef518-1d74-4ae7-917d-b11b5753e115/enfermedades_del_cultivo_de_arroz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e96aabb-4031-467f-a522-2220ef1aecb4/rules_of_attraction_book_simone_elkeles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b26bea43-88d8-422a-8805-34bebed532a0/kirkland_hearing_aid_phone_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f6c6738-fc03-4f1c-831a-c77310c3c192/how_to_change_skin_in_minecraft_cracked_1.15.2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0afbaf7b-ce87-46e0-8acf-da8a56d224a7/laburugogug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23a8c5ca-02b9-4651-b473-2b049cbb14b0/how_do_you_calculate_points_on_weight_watchers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/622d4271-705c-428d-a393-e875906c2657/jujujikizemijerilezeziza.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_off0000eaaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAAA 5428 bytes
SHA-256: f15f4d38802a549716fa415323647cc6b21453de7d16baee4d827854abd96c62
font_01_sfnt_off0000fd3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD3C 15684 bytes
SHA-256: 86ec06a351b4c7b6dcb1d5c97eec037bce979deb7d32cdf5c15291486a2f077c

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