Malicious PDF — malware analysis report

Static analysis result for SHA-256 464076037d1c7b16…

MALICIOUS

PDF

48.0 KB Created: 2020-10-28 03:46:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 54d77e7badc8a5ebcabc3184232246d1 SHA-1: 7864f7fa3f5a75f42a1d621efdace3c945f29265 SHA-256: 464076037d1c7b1645266a7ca94003d31ee37eb68be9149c3a17d6ed3c39c830
94 Risk Score

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://ggtraff.ru/strik?keyword=wow+classic+paladin+leveling+guide+holy'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL indicates an attempt to lead the user to a compromised site.

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=wow+classic+paladin+leveling+guide+holy In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375504/normal_5f9586522d140.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380531/normal_5f97a2b235c8c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378830/normal_5f916f6454871.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366321/normal_5f8dae15bb56f.pdfIn PDF document text
    • https://donibirumot.weebly.com/uploads/1/3/4/4/134463545/a32c17306.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/9778511.pdfIn PDF document text
    • https://vikumeniwexawud.weebly.com/uploads/1/3/0/9/130969440/fubof.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2815/1959/files/37152778527.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8671/8127/files/77075164700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/6990/9408/files/75246348406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6976/7325/files/measure_bacterial_turbidity.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5850/3590/files/book_unwritten_tales_2_trophy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/print_google_books_to.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/gas_separation_by_adsorption_processes_yang.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/45953526294.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b471d1c-88e6-4971-9e1f-21972cf4872c/33781826121.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a37c3ef2-5374-4a56-8be5-240e58d0e39a/jetobas.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_off00007962.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7962 5504 bytes
SHA-256: 9a8b20e091748bb29939acb6e8e78054cb09704cdf87fce13180218630fb50e8
font_01_sfnt_off00008c38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C38 11352 bytes
SHA-256: 6f5a4528c0ae710a4372b8b4736f7c53e16ebb944397c5c5cc40c1fe89977ce9

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