Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5bdc235518a8869…

MALICIOUS

PDF

69.9 KB Created: 2020-11-28 21:56:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0b77521e659a3cff958122e1e00d9f0e SHA-1: d11d798b933f44b6a5e2b49c8c166a8d6860473e SHA-256: d5bdc235518a88698cd327ab359ff157e64014743d6d60daaae615c42f4ebdd0
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://trafffi.ru/aws?utm_term=daybreak+frontline+piano+sheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413693/normal_5f9a56002286c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379855/normal_5f90cd42e2516.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445736/normal_5fb2eed7a099c.pdfIn PDF document text
    • https://sumigixutaruxaj.weebly.com/uploads/1/3/4/7/134748626/603943.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/22ae1100-179b-459a-9ac6-07f06b969b56/ludowanaguvufaxo.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/anova_sous_vide_manual_control.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/xevelunufirafore.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7817267e-8ca9-41ab-83af-a70857f93c75/bitufi.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/grill_design_catalogue_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/gorovenolumabaledibo.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/vubezavijawe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e35f8879-fe64-4d49-b575-e3ceb2ef61ef/kiwuwutadowixegiwometolez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbd624dc-daa9-4dd3-9fcd-26204f9ea4ed/90674439569.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/24269920048.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000ed8f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xED8F 18368 bytes
SHA-256: 3246a05d7f09114713e66925d216d04d6ee870b0c93008ccab4f53ae573325e7
font_00_sfnt_off0000b5ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5EF 5296 bytes
SHA-256: 6bfceccd010cf8f89ae22dede0f4ad3acbbc3973a598a49dd6b30b1d1d513f62
font_01_sfnt_off0000c7fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7FA 10992 bytes
SHA-256: 387cd495c4fcaa22b524f0c01213d9473efde549570c8cae512c83ac19576d13

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