Malicious PDF — malware analysis report

Static analysis result for SHA-256 25ba70cb520306a4…

MALICIOUS

PDF

86.2 KB Created: 2021-04-17 21:35:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 54bdef886f97d995db9fce622891086a SHA-1: 52e3e604fe944edeb1e9ef2e45d4a8de9c252e7b SHA-256: 25ba70cb520306a4dd4f94de8075da1233357c2b379d998f48e1bd76c9a60891
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 0.9997

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://mezovuduw.ru/strik?utm_term=sony+rx100+mark+2+specs PDF link annotation
    • http://fofolep.mywebcommunity.org/15221380138.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454665/normal_600bd0ab83a3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451566/normal_6056a6728248f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457298/normal_603ff13f97966.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371790/normal_6068115c3758c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446490/normal_5ff2d71a3117d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419225/normal_602b8d63c92b6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465277/normal_5fe4faf520432.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403948/normal_601aef82cf4d4.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
    • https://uploads.strikinglycdn.com/files/9a284a0b-24ae-4775-816f-87977713c0e2/what_are_some_examples_of_fairy_tales.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/776ea848-c90a-49df-8a4d-9cf4ec25d618/how_to_record_accrued_income_in_quickbooks_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/944c10d2-47d8-400d-b501-f3976fe3559d/78669041543.pdfIn PDF document text
    • http://rabelame.atwebpages.com/78622594077.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/adblock_fr_opera_chip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/408ac059-c6d1-4a03-9f8b-38f2c73f5fcc/how_to_make_a_virgin_coconut_oil.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/brown_dust_mod_apk_1._43._10.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/wuliwikebogufifevemo.pdfIn PDF document text
    • https://s3.amazonaws.com/bexolamabad/sosisirugawi.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/mevuwenafikuguditot.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/nipurabuxuxotawaliwinak.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_off0001050a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1050A 5372 bytes
SHA-256: 09c83b23c06b1910886f0a32d3b978045c5f0449e0861a374209c78654a4cdd3
font_01_sfnt_off0001171f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1171F 11408 bytes
SHA-256: 21085214fae5ab99c52416ae37b4f191cd64186a1b15aa9c228baf749bb55361
font_02_sfnt_off00013d6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D6C 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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