Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdf2bdea46d03c6b…

MALICIOUS

PDF

68.3 KB Created: 2021-01-10 23:26:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 2d8de4b066c8a8da7a2e8b9a0f7fbe7e SHA-1: 770005240238052851200d546e7ac886c375f663 SHA-256: bdf2bdea46d03c6bafd9eacc527d758c2d00c042cf36b5214b0942473f2c7ca6
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'trafftec.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be a lure related to school district transportation, suggesting a spearphishing attachment attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafftec.ru/123?utm_term=governor+wentworth+regional+school+district+transportation PDF link annotation
    • https://cdn.sqhk.co/xejudawadoni/Zhf8L9q/nututo.pdfIn PDF document text
    • https://cdn.sqhk.co/gojogefe/XQtjaba/perfect_world_mobile_apk_mod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368244/normal_5f8898176f751.pdfIn PDF document text
    • https://cdn.sqhk.co/kinibemazoz/jiieo32/man_down_under_lyrics_meaning.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426974/normal_5f9c7556ddebb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421473/normal_5fdaaa4e1eb51.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://s3.amazonaws.com/jujojomojemiz/tropico_apk_obb.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/functional_resume_example_information_technology.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/gafinopibos.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/21282624328.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/integration_by_parts_using_tabular_method.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/pajigatunibemilif.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/81787022453.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_off0000bf0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF0D 5304 bytes
SHA-256: 0e313689c61dd9cb8ba0776265f09466c764b4d967f86f214906547dcd0399bf
font_01_sfnt_off0000d129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD129 10724 bytes
SHA-256: 844374cf2e49fe3d11dddabdd6edb0bc8cb8a6870dcdca67bb9b48c5376f777f
font_02_sfnt_off0000f5da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5DA 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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