Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d801b36048c7197…

MALICIOUS

PDF

70.9 KB Created: 2020-12-07 19:41:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 5342135704c56de9516bafce930a1bae SHA-1: db2f352805807bc9813c0ed189e8ce4873d1204c SHA-256: 3d801b36048c7197c7db3d60a6888ddb1bd62a8c536c9fc84e3ab31ffcf89bf5
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-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://traffset.ru/123?utm_term=declaration+of+intention+naturalization PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/af30a7d2-35b2-4ccf-999a-68b08de0f551/shaders_for_1.13.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e8622d4-59ed-4cbd-8271-5a71f040b8ff/puxewenalawukumolix.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/44964623786.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5211dec917750a3f31b0b/t/5fcb9a5f551bdc47e7ab6149/1607178847966/nusekajunofilabufido.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cf6bbe2-d2a8-43d4-9237-627e179e0e56/clash_royale_server_apk_download.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/82374378291.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/82638442685.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66fb2a21-da46-49a8-8693-ea816c22f6f9/guxinaxe.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/asrock_g41m-_vs3_bios_update.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b43b8ea-e69c-4d95-a253-305422bd2565/wetawegu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63dab655-d7c0-4805-bc97-ed383b967c97/ar_test_questions_for_books.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2c9392bbd74065812d409/t/5fc68c011972c46e3c82d18a/1606847490571/tudur.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/hernia_ventral.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5331d17e72026400627cf/t/5fcc57999aa2de0c6489220f/1607227290196/liar_s_dice_rules_red_dead_redemption.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_off0000d7e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7E9 4748 bytes
SHA-256: b4c3d30771150be0f153116c30865dcb094e5d4da7cee1f55d90a7db7598c1c9
font_01_sfnt_off0000e82f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE82F 11308 bytes
SHA-256: 4f34bc6b79a2c3e2c215e3249378c5ea452a1da444c6599cfc7260f66ac8cdbe

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