Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ab86258acd63458…

MALICIOUS

PDF

45.5 KB Created: 2020-10-29 18:48:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 94f0665d186f2f136569e53a68b75fdd SHA-1: 1f4f18d008e760ddd98ee7c33123fde97bad4dce SHA-256: 3ab86258acd634583ce193f7e5b8fc34f95c05d4525ca21b5fe66fc4b3855898
114 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link to a known malicious redirector, ggtraff.ru, which is flagged as a critical threat. The document body, though heavily obfuscated, contains the same URL, suggesting an attempt to trick the user into clicking it. The presence of this malicious URL and the ML classifier's high confidence score indicate a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://ggtraff.ru/strik?keyword=shawnee+mission+south+address In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373271/normal_5f89848f1c239.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
    • https://uploads.strikinglycdn.com/files/fa6601a4-ea69-496b-bb58-cbd90b686e40/12205707504.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/acta_constitutiva_de_sociedad_anonima_en.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/tutorial_basico_de_excel_2016.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90eaba9c-51ad-41fd-a726-03952fefc289/ultimate_kauai_guidebook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2c911f1-9031-489f-9e1a-cb33b00a4f38/47817817247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/7029/8529/files/begolotesaw.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/lesop.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/vudovebiget.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/wawezotenax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10bc6846-b47e-4098-918c-02dd261c0405/mozanobi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E2 5112 bytes
SHA-256: 6836cd0f84613d1562d3e4663ddd84af20fb8f09b3f9f0befd7753b363ca32d7
font_01_sfnt_off00007414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7414 11556 bytes
SHA-256: a6f4c1746539d4d10b56dfc5a2b4f166ee85c304a7a40abfd44bea8de59e2162
font_02_sfnt_off00009b60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B60 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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