Malicious PDF — malware analysis report

Static analysis result for SHA-256 77139b6f261729b1…

MALICIOUS

PDF

68.8 KB Created: 2021-02-22 13:43:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 38f10b5a11624d7a11c4edcd85db27ae SHA-1: ef29443a1cd1bb2c272b2ac90804a14124fc9582 SHA-256: 77139b6f261729b1fe90f68e75b8bff53eec2d2fc4ec0a04c82930d6fe6f7160
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://jacksth.ru/strik?utm_term=whirlpool+fridge+water+dispenser+dripping PDF link annotation
    • http://boothattendant.com/779879751924glk3.pdfIn PDF document text
    • https://cdn.sqhk.co/vonezositixi/jd3Hpge/wifilojibusak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505159/normal_5fc730b512051.pdfIn PDF document text
    • https://cdn.sqhk.co/zobelekivix/ggEhjia/app_gratuit_papa_pear_saga.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411931/normal_5ff713d231e64.pdfIn PDF document text
    • https://cdn.sqhk.co/fefamuve/sPTjghi/mo_astray_switch_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445325/normal_6024ace18d35e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459914/normal_5fe38ddd8fb11.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446942/normal_5fc92300c1fc1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502833/normal_603136f5223ee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418590/normal_5ff362167195c.pdfIn PDF document text
    • https://cdn.sqhk.co/jasowipe/gBJjhPx/88063912519.pdfIn PDF document text
    • https://cdn.sqhk.co/fafojipedul/hPymvvR/top_tags_for_instagram_likes_and_followers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472182/normal_5fe274371707a.pdfIn PDF document text
    • http://copyright-helps-team.com/posewowavofelitiw7nfv1.pdfIn PDF document text
    • http://tihefers.online/genel_kimya_vize_sorular_ve_cevaplaogc5m.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366346/normal_5ffe8923845bb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/45785129758.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuzo/84550064139.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/lambton_worm_sheet_music.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_off0000cec3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEC3 5408 bytes
SHA-256: 5461bbad23cc920ef2429a7f01205b7e0a8306aa6416752e6c6fd663d68d20e6
font_01_sfnt_off0000e13c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE13C 10784 bytes
SHA-256: f2f1cbde33d22482be2e1643726bd05a1e14f4a69d14b9476a1a3078cba256ab

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