Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ef0b81f292bf47d…

MALICIOUS

PDF

43.6 KB Created: 2020-10-31 13:49:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 6459179af8d448873aa0c62b314a9db4 SHA-1: 7533c3183cbfdbea175228b0add039d4ff6ac307 SHA-256: 3ef0b81f292bf47db3e565954e084f51fa7ce4163a63bb21bbb5e85057b286bb
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 infrastructure, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also flagged this PDF with high confidence. The embedded URL, https://ggtraff.ru/aws?keyword=ninja+turtles+legends+mod+apk+happymod, is the primary indicator of malicious intent, likely serving as a lure or a download host.

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/aws?keyword=ninja+turtles+legends+mod+apk+happymod In PDF document text
    • https://cdn-cms.f-static.net/uploads/4380393/normal_5f920927b9ea4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377938/normal_5f97ec24092ec.pdfIn PDF document text
    • https://nipaxibovaj.weebly.com/uploads/1/3/1/3/131379211/rabaxabatire.pdfIn PDF document text
    • https://fevixivosetakub.weebly.com/uploads/1/3/2/6/132681861/ffa66d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366316/normal_5f918f5cebea9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366034/normal_5f890cc213cd5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bd82e1b-2e05-4324-9450-dbda43e9924b/merebuwumidapetusiditod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/041e0945-23bf-422e-9010-43128f0f05e8/rulegu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c0a9de0-77d9-4dcb-bdcb-e24013fa72c4/7366949168.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32dfc65e-3c29-4017-9c12-4b0938ff9877/geworadidunara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2333/5065/files/96983693509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5354/5632/files/home_sweet_home_design_mod_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff965827-dc0c-4629-9b00-4dfcffd556cd/73567866592.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7b5f73a-5606-4039-9a9e-2b33e43816a9/kakobosulag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08cf187c-5b60-4ff7-bc53-1d55830feb93/10329255317.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_off000069af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69AF 5584 bytes
SHA-256: 231476a06b74f5b0ffd5553423fe2bacd450b17240f6b15647f1d2fe491e8a4c
font_01_sfnt_off00007c93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C93 10612 bytes
SHA-256: 7741f267fd440eb536db3d80fb1ebfee88cf7e3866f932329c2354100cc9de3b

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