Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d4f4f9b80439f0b…

MALICIOUS

PDF

68.0 KB Created: 2020-12-30 01:14:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 88fb104556485ce24caf78637f5fba8a SHA-1: b82b490b064099918a59214f301c4c9c23d8b742 SHA-256: 3d4f4f9b80439f0b54508b8baf4671a20a3d3f0770a773781b742212fc926f9a
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/123?utm_term=night+city+aesthetic'. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, suggests a lure related to 'night city aesthetic', likely to trick users into clicking the malicious link.

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
  • 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=night+city+aesthetic In PDF document text
    • https://static.s123-cdn-static.com/uploads/4366008/normal_5fc725303071f.pdfIn PDF document text
    • https://cdn.sqhk.co/tewisifupib/jijh9k7/97679716612.pdfIn PDF document text
    • https://cdn.sqhk.co/zadorari/ahaiiDo/sajedugoluwiwade.pdfIn PDF document text
    • https://cdn.sqhk.co/tumozaraf/WKQjdgc/86795791783.pdfIn PDF document text
    • https://cdn.sqhk.co/jamolipa/hazjjii/n64_emulator_download_pc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488837/normal_5fe110218421b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384649/normal_5fc5eb388a85c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393016/normal_5fc8294d8e0c5.pdfIn PDF document text
    • https://cdn.sqhk.co/sozaxejiv/hcc8jfs/tisomuno.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/ac8756cd-a342-4ad4-842c-d50510300a50/43962380906.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/winrar_free_64_bit_filehippo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98e91438-dc46-4a9b-b5e5-191613c614dc/movie_downloader_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65fbffbe-a53f-4b6c-8703-0f0aae2f42a5/77614319290.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFB0 5004 bytes
SHA-256: 03ef9d54d5c0a84acf7df812f8452f5a319dea829739fd7c1c332e4d80930b23
font_01_sfnt_off0000e0ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0CE 10120 bytes
SHA-256: aaf6c81e6cb90558daa31c8f52a9cfa00c14470e36686007bc55f9c7d04d61ef

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