Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f205b52e3132383…

MALICIOUS

PDF

76.7 KB Created: 2021-03-15 12:50:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 403b251bbfd5d9227a6af99bc9d47b6c SHA-1: 66bf8f411932d9a3fe814ccbe9bd34256facad4c SHA-256: 4f205b52e3132383f11edc2d293e9717fc0abc5119cfa223e4a15c8d031e2d22
96 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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/wix?keyword=rich+goranski+quotes PDF link annotation
    • https://cdn.sqhk.co/fenazijeguk/jihhjj4/74311153786.pdfIn PDF document text
    • https://jetosiwer.weebly.com/uploads/1/3/4/7/134767378/tupamas.pdfIn PDF document text
    • http://busijizi.medianewsonline.com/abrasive_blasting_machine.pdfIn PDF document text
    • http://wiboratiraveguw.mygamesonline.org/manual_de_cactus_y_suculentas.pdfIn PDF document text
    • https://cdn.sqhk.co/gujowaxexag/Qiajdhd/anime_stickers_to_chat_wastickerapps.pdfIn PDF document text
    • https://tivufele.weebly.com/uploads/1/3/4/6/134615601/pupetizigowire.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470526/normal_5ff186cf21ab0.pdfIn PDF document text
    • http://rusadezebep.mygamesonline.org/how_many_chapters_are_in_chronicle_of_a_death_foretold.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489730/normal_5ff9101be3ec2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388421/normal_602acbd4754fc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/expression_language_injection_cheat_sheet.pdfIn PDF document text
    • http://jokubamobivavum.onlinewebshop.net/business_plan_sample_computer_shop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/489268fd-1f0f-46a7-9d70-81b78c921d50/72295756330.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/hymns_sheet_music_with_chords.pdfIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/how_to_check_blood_pressure_at_cvs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ca7c92e-60a1-4428-8dc2-1bc144997829/3924678498.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/bangla_eid_natok_2018_3gp.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7280c570-ab42-4836-973f-f298f29fadef/wamozupixorixomazon.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_off0000e433.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE433 5228 bytes
SHA-256: 4cf9954297b1d428f3dc9d64ce29ed8a00732b94d6eb6d27c67289fea05d70eb
font_01_sfnt_off0000f5f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F3 1916 bytes
SHA-256: 266b22fd0c2c2b76ea04b43d7954242befda6681878a1abc5267c941275959f2
font_02_sfnt_off0000ff19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF19 11352 bytes
SHA-256: 2954948bbc98923b3da09b9709f68aeb3e387bde876d34ad2357a600d02adbb4

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