Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7c3467e33ddec9c…

MALICIOUS

PDF

47.5 KB Created: 2020-10-30 12:56:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 48b56e15eaca8f961406403369337f20 SHA-1: b5e2af6fd326c50548928c2d3891aa93966e9b83 SHA-256: d7c3467e33ddec9c599eee8e7368a7754a7405e6e048ba2ad761f5e445332152
110 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to a Canon printer manual and a URL that mirrors the malicious redirector. This suggests a phishing or redirection attack, where the user is tricked into downloading or accessing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ttraff.cc/123?keyword=canon+pixma+mg2520+manual+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366408/normal_5f97787302f22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368222/normal_5f879b94b2906.pdfIn PDF document text
    • https://tovozilulu.weebly.com/uploads/1/3/0/8/130873983/2223941.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413228/normal_5f96ebfe8d3c4.pdfIn PDF document text
    • https://tizukusijevawus.weebly.com/uploads/1/3/4/4/134454617/2623634.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/lomogas/large_plastic_planters.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/pavotumasokenufowudoza.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/punctuation_exercises_with_answers_for_grade_3.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/frank_sessions_damian_lillard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2618/4349/files/94958062904.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_off00007aa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA6 5460 bytes
SHA-256: 9c98929cea2eca1f821b623e60beca89937277f36fccf2789a5f2511148c6daf
font_01_sfnt_off00008d3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D3A 10588 bytes
SHA-256: 6ee83b40b1a9c0007d27c08ba3f53e136d01461ca8139ed7c2cd4d9cacea22e6

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