Malicious PDF — malware analysis report

Static analysis result for SHA-256 26dc11cc9d8dfa8f…

MALICIOUS

PDF

70.7 KB Created: 2020-12-01 02:38:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a907fbf3a7e38ba3bb0acc2006652ed5 SHA-1: 2f8efb50bf423937ed627c70288c1818c66765ad SHA-256: 26dc11cc9d8dfa8fbcc4ba752131c4d71f03616eb30f8b5ff9a6b5aadf4fd9e9
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 0.9998

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
  • 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://trafficel.ru/123?utm_term=610+credit+score+mortgage+loan PDF link annotation
    • https://terowibew.weebly.com/uploads/1/3/4/3/134370771/keminamosix-nekovin-tijojevoribi-wesuberajo.pdfIn PDF document text
    • https://kupanonul.weebly.com/uploads/1/3/4/6/134682697/nujolabunef_sovevamuzuri_xuwaxesasiw_magosezogife.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371497/normal_5f9ae77ba7f67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427293/normal_5fb564fde47f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420907/normal_5fbf189815453.pdfIn 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/a6f4a92b-7405-41ca-b91b-b78a1c6bb7a0/lost_and_found_bluford_series.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ca7cd5f-6ee1-4065-a364-592c6917d99e/60561846947.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/gujarat_police_constable_exam_answer_key_2018.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e335a5bc066edfa5a857/t/5fc1cc663485235c860936a0/1606536317706/wupoxiwepafawetenas.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1ae0cab79f442f22f189a/t/5fc3f35ef3de5e49b5dea1c3/1606677345401/55819713468.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1407d8787e879896e58f6/t/5fc5782af3de5e49b51f16c4/1606776874891/23275137037.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe417efa04221c71eccbfb/1606304126897/bryce_love_draft_scout.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2a60b1c8c7413143d24fc/t/5fc522427acac6192a65aaff/1606754884089/rijamerive.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15a4281e-8c39-4b74-aef3-4f5bc0ce9ca3/espaol_telesecundaria_tercer_grado_volumen_1.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/72056237796.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9699a13-ca92-4d87-90e8-9b18f0b210bc/70846201496.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_off0000d55c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD55C 5512 bytes
SHA-256: c412e997a084030f1e808851409a64d8abb1694ea98bd4f9a3851a1404b7e4f4
font_01_sfnt_off0000e803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE803 10688 bytes
SHA-256: 516750fba817c94fe0398ab32b6439ca330d1689377c9dfaf8228b72699e3658

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