Malicious PDF — malware analysis report

Static analysis result for SHA-256 e59547f30337fa2b…

MALICIOUS

PDF

74.5 KB Created: 2020-11-21 02:18:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 0a1ac99233b7cf78d2acf9c41bc755d8 SHA-1: 33732d9e21bdfc41a110ea91e71e9ce5c07923e9 SHA-256: e59547f30337fa2b113f03fc4252f6954637af4d604af0154c8b363c32e35dd2
154 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 routes users through malicious redirector infrastructure. 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/123?utm_term=good+eats+season+14+episode+21 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369802/normal_5f907258946c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371014/normal_5f913ddf392c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460477/normal_5fa43e6fd0461.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/wilugugo/math_tricks_book_in_hindi_download.pdfIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/quake_3_download_full_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6e4b595-ee59-4cca-b5cc-30d0ddf45bee/35735505383.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/curriculum_guide_in_pe_7.pdfIn PDF document text
    • https://s3.amazonaws.com/devuxuzejozam/91906376442.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/vevirufewotom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/384a4638-433c-45fe-8acf-c0d948d16e39/gatikabusuxesebutijetupol.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/gevote.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/new_super_mario_wii_rom_hacks.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_off0000e4c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C2 5128 bytes
SHA-256: 5a630ce6cc1bdd1928db577b75f07ad7cf6fa1bf82ca0324d8d43c924d4994ee
font_01_sfnt_off0000f658.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF658 11072 bytes
SHA-256: 0493023c100f4e3fc2d78d421f7a5b29ef800b5f4ba193d9982491b143ac3c6a

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