Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1eb06d7e6787f06…

MALICIOUS

PDF

43.0 KB Created: 2020-10-30 18:43:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: bea77355efaccd835105ba9905a3a3df SHA-1: 89c7b10a539c0c15d04cc7c8317ebc7d99bcb886 SHA-256: c1eb06d7e6787f06977604229bf532a13d7e70c7c4752641cfc3005f856790c8
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is a common tactic for phishing or malware distribution. The ML classifier also strongly indicated maliciousness. The embedded URL is the primary indicator of malicious intent, likely leading to a phishing page or a further stage of attack.

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://gettraff.ru/strik?keyword=chevy+4+speed+manual+transmission+with+overdrive In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375356/normal_5f937d166b4e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387562/normal_5f8ce95a8d318.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/add721c1-4b25-410a-bbf4-e71a479d4f90/lagu_atikah_edelweis_full_album.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b30c1aac-5a50-4090-bf70-02ba81f8e214/acura_integra_gsr_manual_transmissio.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/ansys_aim_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/75953623515.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8236/4566/files/fudelewapujamotano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9618/6274/files/89661089920.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/50673350044.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/download_file_yasin_dan_tahlil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7b772e5-0bbf-41ec-81af-a17a004eb4bd/77896921023.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/cytology_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aff05522-c513-4ad4-a454-134a9b3c8a23/wudojofibapevokusapef.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/35410861324.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_off000069bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69BC 5444 bytes
SHA-256: a9d1ea52b6411127b774997ec1d9b4638d80227701cef979fa4a8363a94286f9
font_01_sfnt_off00007c30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C30 10052 bytes
SHA-256: 421cbccd2691a7ebb2d947beb316aed360fb2834f909a3db6642c7fb3ea0f25d