Malicious PDF — malware analysis report

Static analysis result for SHA-256 00c1c3cc1cb4cdd7…

MALICIOUS

PDF

78.9 KB Created: 2021-05-26 04:24:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7999f884b8b55ff4d9f00248db09a01c SHA-1: 58b21b6bec9f8109152e29c50ab68b937f94bf58 SHA-256: 00c1c3cc1cb4cdd72c2e397bdc72707bdd5719031d4b3fcde8411ff7dd3f209f
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 0.9996

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://yafferge.ru/strik?utm_term=heat+mike+lupica+quotes In PDF document text
    • https://cdn-cms.f-static.net/uploads/4499023/normal_606c9fdfae429.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420617/normal_6017a2c407607.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370529/normal_6062eb3b3f93e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423166/normal_6032f64e4ed6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384028/normal_6013239c66d3a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408721/normal_5fddc417e2aa2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417664/normal_604a9a3ac7a3e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386851/normal_5fc914e3b29c7.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/f3694c59-3992-4c0d-8b06-374ead2e6190/vofulufiku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80b4e210-e800-44a0-be9b-714ffd7aed51/tubira.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c397a5f-9031-4d57-88eb-36b702b2fe32/boxitagofuru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cfccad7-0883-4b5f-b8ed-ae7e233b4baa/inside_full_game_apk_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93e5cd95-c2e4-404a-ae5c-cf462befcf3c/game_of_thrones_full_episodes_download_in_tamilrockers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cbf9964-3950-42bb-adbc-1da731eb85b2/fluval_207_size.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3909ce3-02c5-45f7-ab15-ab27cefb3e87/mejobak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9b0c0c8-82a6-4599-b18c-a61f3322a3e5/deripubiguduwinovolas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23e7e11b-af03-4a00-b984-94fbf9507a91/black_hawk_down_the_untold_story_rotten_tomatoes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/858a0bc9-4d99-41b6-a2f5-86f2fc83bcac/medidas_de_llaves_mm_a_pulgadas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9954fde8-8eb8-4426-b7b9-06ea154e0330/moxakudolekamup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e97cbecc-8bf8-4016-89cc-b2f009b89d2a/what_size_is_30_in_womens_shorts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/921dedb1-29d1-41e8-9b89-acce92bc6aba/abu_garcia_black_max_spinning_reel_manual.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_off0000f940.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF940 5136 bytes
SHA-256: 3e59e28bb827fda3e495b63bbf6d3c6009108a7bae269913e1816bad9eaf17f2
font_01_sfnt_off00010aab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AAB 10476 bytes
SHA-256: f4b861257a323e61b728f7914588239df7e8bd848fe75fba7b9ed3158e5457b0

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