Malicious PDF — malware analysis report

Static analysis result for SHA-256 a020ecb82d7cdf88…

MALICIOUS

PDF

74.8 KB Created: 2020-12-18 09:10:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 7ebe6830e03d565e82a4433dce92846a SHA-1: 9efd36c3c45ae164751e98b632ad35f12338af46 SHA-256: a020ecb82d7cdf883ddc9b91543055f34a6555f651a09fcfb0f6830a8c679469
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'traffine.ru', which is likely used for phishing or to download a secondary payload. No scripts were extracted, but the presence of an external URI and the overall detection suggest a phishing or malware delivery attempt.

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://traffine.ru/123?utm_term=anwe+the+killer PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf499bcb3e0f577145986a/1606371741412/community_christian_school_baraboo.pdfIn PDF document text
    • https://s3.amazonaws.com/nawuvud/avast_driver_updater_2.5_6_activation_key.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc289bc24b06a7eb309ae07/t/5fc467d108845d092416fe38/1606707153585/24183358256.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc00874a5bc066edfa0f7a0/t/5fc3490d9d79364840f793f2/1606633743077/18774041302.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d2c262f-5d0d-4af2-90ae-1183f65d0732/cancun_to_tulum_distance.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce105bc1e311104da5b134/t/5fd66c9272b1137fa977a387/1607888019146/asco_guidelines_for_growth_factor_use.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7ba19161f8068bed05d18/t/5fc816ba8bd779356742c48e/1606948538437/zezerek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b78a215-25f4-4073-9d37-89404aea6c4d/59127288382.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6018b360-0f5b-430e-802e-08091bf8a758/radio_flyer_ziggle_wheels.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/how_to_use_td_ameritrade_thinkorswim_platform.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe1f325147b14804fbb973/1606295346445/using_recursion_in_models_and_decision_making_recursion_in_exponential_growth_and_decay.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23b1c283-f15d-4ae4-81b8-53d9ef745e91/beneath_a_scarlet_sky_review_questions.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_off0000eab4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAB4 4528 bytes
SHA-256: ba153e3685ebb3ef9afb863099843c5ba98c7456ca440478c071b7db1e608b82
font_01_sfnt_off0000fa1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA1E 10692 bytes
SHA-256: 700fa09e9717e9dcbdeb22178cd7bc4a4140635b2a31bce31b93f1c0c5883f8e

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