Malicious PDF — malware analysis report

Static analysis result for SHA-256 44c275cd574cab56…

MALICIOUS

PDF

69.7 KB Created: 2021-01-19 13:55:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: fce98ef2d347c9af6e9c24a2f1e2e664 SHA-1: 9029274165eff564255aed74482690bacaa5488a SHA-256: 44c275cd574cab566371124c6c0c201cdc313324d933dff17ac9306fd3b626e6
154 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, and it contains a critical heuristic firing for linking to known malicious redirector infrastructure. The embedded URL 'https://gettraff.ru/wb?keyword=can%20you%20escape%20the%20room%20level%2049' strongly suggests a phishing or social engineering lure. Although no scripts were explicitly extracted, the PDF format itself can embed JavaScript, which is often used to facilitate redirects or exploit vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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
  • 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/wb?keyword=can%20you%20escape%20the%20room%20level%2049 In PDF document text
    • https://cdn.sqhk.co/nafumozuwe/jaP8Ugc/pagozexeron.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389108/normal_5fc80c2acd146.pdfIn PDF document text
    • https://cdn.sqhk.co/letonolomo/xjblhif/12089675577.pdfIn PDF document text
    • https://site-1242803.mozfiles.com/files/1242803/hkiac_arbitration_rules_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/junukexad/jbgdgic/zimet.pdfIn PDF document text
    • https://cdn.sqhk.co/gadewekunel/Zg2miaY/sling_blue_and_orange.pdfIn PDF document text
    • https://site-1175088.mozfiles.com/files/1175088/american_football_league_table_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/pixazizaze/32gdmsq/wudotarojiwuligan.pdfIn PDF document text
    • https://cdn.sqhk.co/desogepupema/6hchhhg/parallel_space_32_bit_support_mod_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c62b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC62B 5436 bytes
SHA-256: eec51c36f3902614452e83dee333c7ccc70c0f067163e91f6d38f2f7833760ca
font_01_sfnt_off0000d895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD895 10296 bytes
SHA-256: ef3ea2cab63b2b2dd2732f34d6157d857c5b2b850f5e01f0111cce6ae314f0e7
font_02_sfnt_off0000fbc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBC7 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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