Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8ff6373a6d50ec4…

MALICIOUS

PDF

45.2 KB Created: 2020-11-07 15:07:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: dd8d5b27be5d10a51b19d412056f5503 SHA-1: 937754b96523c0085f47da3e8736ab85f332a002 SHA-256: a8ff6373a6d50ec41c2b1e090be7668d6b99d6670f9e205d0216ecdcf3120db9
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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/123?keyword=xmovies8+tv+apk In PDF document text
    • https://dedodewoluxo.weebly.com/uploads/1/3/4/4/134402612/zaraz-tuwulukika-bofux.pdfIn PDF document text
    • https://xaverawigidun.weebly.com/uploads/1/3/4/4/134437914/vizilabuxakebe_febupevukut_jojisopebasaf_jiwenun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389821/normal_5f8dda37cbc02.pdfIn PDF document text
    • https://wufikasokuwomoz.weebly.com/uploads/1/3/4/3/134359410/e54196.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365575/normal_5f9c4d04f1a84.pdfIn PDF document text
    • https://fejamelaluboj.weebly.com/uploads/1/3/4/3/134311679/3693538.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411717/normal_5f9b5fd86732f.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/8e362ba2-edf3-435a-82fd-a7d56bbd8cfb/nomuzuruzo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3e9fee7-a831-472b-b805-ce952b06856e/musanin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b976091-4d4f-4c93-bc10-877ce8d0e627/far_cry_1.4_patch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d946e6bf-db3c-4264-a925-41b853ef1818/der_schwarzfahrer_analyse.pdfIn PDF document text
    • https://sebuwisawos.files.wordpress.com/2020/11/fipupojuretis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/536948bf-0b6f-4dd7-92ea-f8e75b67ac47/grind_me_down_lyrics_gacha_life.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_off000063be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BE 4816 bytes
SHA-256: 41e4a6967ff0c3a156b4f9910357269b5f37373568e5e8fc99590d614e2fe96d
font_01_sfnt_off00007424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7424 11128 bytes
SHA-256: cd911376d4418af1bd6fee4fb154f27150633437c4350c2adb25abfb6ac46cb1
font_02_sfnt_off00009a3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A3A 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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