Malicious PDF — malware analysis report

Static analysis result for SHA-256 57da0cc92b25b463…

MALICIOUS

PDF

42.8 KB Created: 2020-11-02 03:12:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 82a43d3e90222461225be0e9d342e938 SHA-1: 2f23975dc61c6596e5fa85a811e75bed67b68319 SHA-256: 57da0cc92b25b463ab37623036e61de917b47b63a3dc43189badb1f2df474eff
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://ggtraff.ru/strik?keyword=sierra+vista+police+department+chief', is the primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to lure the user to a malicious site, likely for phishing or further malware delivery.

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://ggtraff.ru/strik?keyword=sierra+vista+police+department+chief In PDF document text
    • https://cdn-cms.f-static.net/uploads/4376611/normal_5f8d5ed9e02d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393883/normal_5f937dc2f1797.pdfIn PDF document text
    • https://fiselowozol.weebly.com/uploads/1/3/4/3/134366189/fovijewasola.pdfIn PDF document text
    • https://fekudumubaf.weebly.com/uploads/1/3/2/6/132681201/zinoxovij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393193/normal_5f9e79f341772.pdfIn PDF document text
    • https://lunipudazu.weebly.com/uploads/1/3/4/4/134462877/da4592.pdfIn PDF document text
    • https://fidevawane.weebly.com/uploads/1/3/0/8/130814252/8f28384f39913.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/jovekus/club_penguin_mission_5_trap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/9241/6946/files/37544615589.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/binomial_probability_distribution_examples_solution.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/chemquest_14_lewis_dot_structures_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/sabaton_hearts_of_iron_genius.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0508/2169/3605/files/zivixapuzirijorelifo.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_off00006514.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6514 5556 bytes
SHA-256: 976b28b1b154596472b0c121430a37ab8814e7ad2b5d5f21b050d33482983e2f
font_01_sfnt_off000077da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77DA 11224 bytes
SHA-256: 8fa3ac6bb6470c333b77d1cef70f4a4d833ac3ea280bd31e81a0cf67eb7382b3