Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc5a46efcfc0d301…

MALICIOUS

PDF

48.9 KB Created: 2020-10-28 09:16:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: a1893fcf18b3f6059cba9b1eccaab3b6 SHA-1: 140ceb35834c5eb95f80dbac79d88c25aa43b52c SHA-256: fc5a46efcfc0d3017cd07871b1d820ae560892161799799c222aa57416fb7bab
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.club, which is highly indicative of malicious intent. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the redirector heuristic suggest the document is designed to lure users to a harmful destination, likely for phishing or to download further malware. The document body itself is heavily obfuscated and contains the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://ttraff.club/pify?keyword=iglesia+de+efeso+timoteo In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370294/normal_5f88b4181b887.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367297/normal_5f94241de0cbb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414166/normal_5f96db6973bb5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372376/normal_5f9548528d71c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389570/normal_5f98a2b02ed69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415530/normal_5f956f1f25e33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379387/normal_5f8dadf76aa38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367944/normal_5f878755dcfdc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375522/normal_5f8c84299c4fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384819/normal_5f91e9e942020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377408/normal_5f9093f81d05a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367668/normal_5f875432d0635.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380209/normal_5f989af9b0c9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380090/normal_5f8abe8a6e0fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374362/normal_5f8c95af93b86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387240/normal_5f918cc59ad57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382770/normal_5f98bb83a7f55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369903/normal_5f88f66d15983.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/susopuzupure/vonezot.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/pathways_of_drug_metabolism.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/hydac_clogging_indicator.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/23041979951.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/114997aa-0e73-4a85-a4bf-ef60701a9bf6/dagabisiwumusoror.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b57d4c7-0654-409a-833f-4b7161b8f364/ruvametona.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d82a1c28-5c3b-47b4-8646-6af9ded331e3/gamikifizasubara.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_off00007f27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F27 5068 bytes
SHA-256: 74508cfdaa709506a6f83203ae9563f7bb073cb802cde3bac27448a58d771e37
font_01_sfnt_off00009055.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9055 11212 bytes
SHA-256: 3f37c5f477a04699a9fcd33d5a30c2e9ff0a39dc16e4035155145aed9fc800c4

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