Malicious PDF — malware analysis report

Static analysis result for SHA-256 2467bc16ec46972c…

MALICIOUS

PDF

68.7 KB Created: 2020-12-18 12:53:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 12a5e2d8668f5e29a51f41569503e21f SHA-1: 94189f27ad83134898cca5779c1462343f662917 SHA-256: 2467bc16ec46972c5fed0ce9609340ab3ce878117dd9640784fa01e08ed0b98f
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. This URL is likely used to lure victims to a malicious site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the redirector suggests an attempt to deliver a second-stage payload or phish for credentials.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/strik?utm_term=mongodb+map+reduce+java+example In 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/90339220-7e0c-4684-997c-ae21a8f7e589/56869479028.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc54c685bcb0228a29f9b3d/t/5fcd0dd174a40730fb9df5c7/1607273938063/bem_anime_2019_wikipedia.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdc7b6f43483e57e2cf12c2/t/5fdc83766ba1be148e847cd3/1608287095144/best_car_games_for_android_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/tomaxade/rarurikawikadiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a88532eb-6aae-4a8d-a6b5-9133d150b051/vocabulary_self_awareness_chart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0cb7235-0d02-4d87-bd10-d9796d6ca891/financial_accounting_clep_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92fb6efc-f17e-4933-b3cc-c5808b961a77/94681887771.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/243a2501-7b48-466b-9710-05a941a3f637/livro_como_as_gigantes_caem.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc56d0fea4a794d56639523/t/5fceb208eb7447177aab71e0/1607381512982/78459092032.pdfIn PDF document text
    • https://s3.amazonaws.com/fadobirak/professions_gnome_mage_wow_classic.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/89503410886.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc664e86609fd0ee7b71430/t/5fce73377c895704cf8a88da/1607365433638/slots_free_play_sky.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf67cbf8cdb769c6db1817/1606379467933/duwajanojunuvijexit.pdfIn PDF document text
    • https://s3.amazonaws.com/sodoxi/ziboxezuwil.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5aeac6b97992eb57c3fa1/t/5fcb8e951880ce05e84cd850/1607175829354/microsoft_global_account_technology_strategist_salary.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce5af2c83faa584ad09b2a/t/5fd61bbb313c42342b845bf2/1607867325589/arctic_hare_information_in_english.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ccea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCEA 5564 bytes
SHA-256: acdedcf46e3b138c2cc522a372fa88ebd7ad0614e85366131b52cec77ed8e918
font_01_sfnt_off0000dfd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD5 11160 bytes
SHA-256: 2fb53318813e101a2d530c025a1efcf516ee42a9aecf188b42739b2d0b6e6cf1

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