Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c60d0fbe71668e7…

MALICIOUS

PDF

47.5 KB Created: 2020-10-27 08:58:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 0b08921bb5cd506d230bbb0534417790 SHA-1: 3c7ee7e987b7cb3932ac4723d47e1f1a75f65f57 SHA-256: 4c60d0fbe71668e749c48966b39e3133d2389420ab7c31fcccb16e005d1f2639
162 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous links, including one identified as a malicious redirector. The presence of a 'download button' lure and the ML classifier's high confidence score indicate a malicious intent to redirect users to harmful content. No scripts were extracted, but the embedded links are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://cctraff.ru/strik?keyword=ydcb+summoners+war+on+pc In PDF document text
    • https://dexajuvado.weebly.com/uploads/1/3/4/4/134470202/kajogesovatixa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380230/normal_5f8d87f87e404.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367312/normal_5f88e88817108.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408355/normal_5f94991a82fde.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366399/normal_5f8719a8b4666.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369146/normal_5f8ad480be901.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374533/normal_5f8ff445207df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384463/normal_5f91807bf1837.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366017/normal_5f87038fcdeca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389821/normal_5f94ce12939f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379385/normal_5f94141fd6655.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/9501/5831/files/zitozilesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/3657/4364/files/dr-40_tascam_review.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/1702/6715/files/grafting_in_mango.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5008/1690/files/login_with_facebook_in_android_studio_github.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/fudeligoregudawotoxajuvez.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/nuwisolinov.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/46169414008.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/simovuridedinevaradis.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/partes_de_una_bomba_de_engranajes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b465211-a9d8-4457-97da-0c098261b3d4/morning_has_broken_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd83f9e8-ae06-4f11-8d26-d6774b3f3d73/vulemuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3f100e3-e757-41bc-9379-cf5c3e66ce32/dell_inspiron_mini_10_pp19s_specifications.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4a1d7a5-b8a7-47c5-93db-bd03042eac17/divifik.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_off00007a5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A5A 5380 bytes
SHA-256: c22e5fcf30d664b232ab0691abb4adeb67b8f69366c11f957c51d0d9a8c3a6d6
font_01_sfnt_off00008c93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C93 10424 bytes
SHA-256: 45415f211a9b1636a51b1168618bb70a9d07b9c93b026d6e4bd9f4e743f646cc

Open this report in the interactive analyzer, or submit your own file for analysis.