Malicious PDF — malware analysis report

Static analysis result for SHA-256 db581923dab3160b…

MALICIOUS

PDF

73.4 KB Created: 2020-11-13 08:02:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 82bf7da3800694c1d9da51e177da933e SHA-1: dece334c286167b65ac02c1bf76b78ce6cfce434 SHA-256: db581923dab3160b6f57a0cafc934e0c1f06b0996467c7b33fe3ae593a194a93
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://trafftec.ru/123?utm_term=bengali+horoscope+book+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366346/normal_5f8911b7e5901.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369764/normal_5f93787637017.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367640/normal_5fa5c1fc83ad9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466175/normal_5fa8cca9bdb2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450036/normal_5fa14267ba8fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371261/normal_5f8b6012d80d9.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/9e208d24-31ce-481f-8390-120aecf77f67/rusav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3e56d57-13ed-4bcc-b1ef-50ae56810de1/nebagusemopofafufiwopiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb27354e-39c0-4fc7-b64b-f952034ebbc5/zajodesegikikana.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/l_anaphore_et_la_cataphore.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c855fc3-1a6f-4d4d-b45d-6e53ad13e062/58539224460.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6501137-faa4-4192-aa4e-ebbff7461736/65967464168.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42fb59b9-6f4d-41a8-8958-b1938b5f0d61/bsa_totin_chip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c1dcb9f-8a39-4826-9909-a2c689a76e79/can_bearded_dragons_eat_grapes_and_strawberries.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_off0000d53e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD53E 5376 bytes
SHA-256: 5f8b952205afa0f44dd49585d05814eb3d1464e4ca2210c324b5a708f4c0f137
font_01_sfnt_off0000e76a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE76A 10356 bytes
SHA-256: 7a8fda0c00fad11b663f5edea35103010d865b02e216c546a8d68a3fbd0409fd
font_02_sfnt_off00010ac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AC0 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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