Malicious PDF — malware analysis report

Static analysis result for SHA-256 c469f6fd4e15d22a…

MALICIOUS

PDF

70.3 KB Created: 2020-12-25 22:50:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: dacfd04bc135dfc92e7e21e26e6089c1 SHA-1: 95e8898f16b953c58687af2d9b25063076af75be SHA-256: c469f6fd4e15d22a4c09c064047cb00cc4fac65c34dfa93021f09f1b19a7d084
94 Risk Score

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 0.9998

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?utm_term=toca+hair+salon+4+apk+todo+desbloqueado In PDF document text
    • https://nupotilevalodo.weebly.com/uploads/1/3/4/3/134307307/59d91f522710952.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411252/normal_5fb346f956828.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424007/normal_5f9d7a9cc637f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473062/normal_5fc92776c6930.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/godekux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496616/normal_5fd965bf13597.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/padoragog/ib_visual_arts_journal.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/aetna_better_health_pa_provider_forms.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/ecce_romani_2_exercise_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/wobugevexo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2523728-6c7e-4b5c-a265-1209c8fa3baf/duguwojipen.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/sample_of_formal_and_informal_letter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/675f093a-7d17-43b0-a43f-98432667a34c/fobojuregaf.pdfIn PDF document text
    • https://s3.amazonaws.com/megujobemegor/79631377703.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/terence_tao_analysis_1_and_2_free_download.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_off0000d6a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6A3 5528 bytes
SHA-256: 539c08490aa6c6867b3863b548121934e4c4d11832f86f336a98eab80b3ab2a7
font_01_sfnt_off0000e961.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE961 10088 bytes
SHA-256: 39d2c940dc0e434f6842a173b22c4fa3338d116a8a9d32aef15c6ceaf1763caa