Malicious PDF — malware analysis report

Static analysis result for SHA-256 0afbe43cf9b33cc2…

MALICIOUS

PDF

73.0 KB Created: 2021-03-16 18:25:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 685a3366835cd76acc2c3df3f108b8dc SHA-1: 58a0c9b4b69198faafa28167fac7b987fef12147 SHA-256: 0afbe43cf9b33cc2834f6a8b9cc06a3a716626407d7df1910b065f6c50d673e9
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 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/123?utm_term=abstain+verb+forms PDF link annotation
    • https://cdn.sqhk.co/koxopumo/vgiYjci/boomerang_movie_1947.pdfIn PDF document text
    • https://cdn.sqhk.co/tenotitur/sT1dChe/nawewadijodixogid.pdfIn PDF document text
    • https://cdn.sqhk.co/kuxaroposa/ijh2SKD/wawusabe.pdfIn PDF document text
    • https://cdn.sqhk.co/buwowunuras/bWgizjh/caulipower_margherita_pizza_ingredients.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384307/normal_6015d2d460727.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492529/normal_604e470342f0c.pdfIn PDF document text
    • https://cdn.sqhk.co/sogunixe/S4cQBje/memeki.pdfIn PDF document text
    • http://avto-document.site/dragon_ball_z_budokai_tenkaichi_3_isghw3b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393628/normal_5fc9dd19d66ce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427795/normal_5fde9e9cbd518.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476011/normal_5fe3af0e659d6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453333/normal_60049180cb22d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sasujawanolej.epizy.com/convert_to_word_using_ocr_online.pdfIn PDF document text
    • http://pemojam.rf.gd/2388673773.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bb7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB7D 3312 bytes
SHA-256: 082c89522e4251f0a814862fddf633b1dac669eb780a02580130c1f52bfffe84
font_01_sfnt_off0000c75e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC75E 5068 bytes
SHA-256: 73d1a99d710ac8646c460cb420a39d20ea14c1983261de41c8f91b74ef41bcb1
font_02_sfnt_off0000d891.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD891 11800 bytes
SHA-256: 8cfa0020fb5223a8114a61babd08a5e6b92027f395f97322447a6a1616bd4f9a
font_03_sfnt_off0000ff87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF87 16684 bytes
SHA-256: 4cd55fee6c52bbab32ed20b0b25846bff407090075fa0ab45dc9808449a8eeb0

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