Malicious PDF — malware analysis report

Static analysis result for SHA-256 21697457d61406b0…

MALICIOUS

PDF

47.8 KB Created: 2020-10-28 23:12:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8895f136f61d881c1ef70c13edd2fee0 SHA-1: d90e98d4f9daae6f439860f7243ef910ef172390 SHA-256: 21697457d61406b0197366030d28138d785cf9d1b202351c9f6753e874065dc1
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=clash+of+clans+lights+s1+apk+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366325/normal_5f8895430855f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366022/normal_5f874214aa448.pdfIn PDF document text
    • https://samomalekadoj.weebly.com/uploads/1/3/1/4/131438786/jadiwafijunalawedor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365600/normal_5f91eddc97093.pdfIn PDF document text
    • https://gomemetunugup.weebly.com/uploads/1/3/2/7/132712315/sipokidozuvumag.pdfIn PDF document text
    • https://gejatovuri.weebly.com/uploads/1/3/1/4/131406669/faxenisurasasu-narotonibal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383322/normal_5f96044106c34.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/25c24b4b-d205-4561-93e4-39fa7642b991/38829180011.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/alcohol_en_la_familia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8304/5293/files/warship_battle_joycity_mod_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2547/1400/files/91872632749.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d2cc748-43ef-4931-a687-7b28600820cb/43686381264.pdfIn PDF document text
    • https://s3.amazonaws.com/rotafasaniz/my_perfect_you_full_movie_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0957/1990/files/hernia_inguinal_fisiopatologia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd596c15-8096-4154-961a-2b797cf9d302/sulitilore.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cf9ef8d-e2c9-463b-a4a3-db87cf8bb16e/jedutopuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/5594/6149/files/employee_procedure_manual_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3727b653-768e-4e00-9cb8-e86fa2ad4dda/55194340498.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1830954-e2c8-45ff-b7f7-e50b0433cf4a/desiwivuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0908d86-235a-4f7f-85cc-869495b50931/xujedafavobekugarusu.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C07 5432 bytes
SHA-256: bcfc51cd032c357ad2e562b5d67edbe2f31abc838b6024727253a8f4c6e90370
font_01_sfnt_off00008ea1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA1 10368 bytes
SHA-256: 5c663e70dd9c6234f6ef54d4fe061a803a39eaf33fe7c981b65ac64ca24dfca7

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