Malicious PDF — malware analysis report

Static analysis result for SHA-256 aad2b47530252ec5…

MALICIOUS

PDF

58.5 KB Created: 2020-10-17 02:45:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 539008db73efd2635ed24d7ab0740409 SHA-1: 26d568956dfa26efad4678b06b8456986eb8a7c8 SHA-256: aad2b47530252ec5b12dc37268502892e8d99d4ba4f894e71ee1afd8ca629923
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a malicious URL disguised as a link to a vehicle owner's manual. This URL is hosted on known malicious redirector infrastructure. The document also contains a large number of links to other PDFs, suggesting a link farm or SEO poisoning attempt. The presence of a password-protected archive lure heuristic indicates the document is likely part of a multi-stage attack.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://ttraff.ru/123?keyword=mitsubishi+colt+2020+owners+manual In PDF document text
    • https://xizirogubo.weebly.com/uploads/1/3/0/7/130776043/6534821.pdfIn PDF document text
    • https://zalopajozi.weebly.com/uploads/1/3/1/4/131453352/sadutovolije.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/1072509.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368955/normal_5f87f2f279deb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365635/normal_5f87e512c4324.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366647/normal_5f8a22100ffde.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367273/normal_5f8a19ff74289.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/1/0500/7304/3102/files/46386082009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/7890/0640/files/bard_high_school_early_college_cleveland.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2940/5079/files/kepanojurilim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4104/5145/files/kukese.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff6ac091-23c0-48fc-ab26-91f5e2c4704a/21026745900.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a3452a0-3faf-4149-bfe8-e525a2fe7949/kevoxiviv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05058fac-d0a8-49d0-9fb2-7c5dd45bcc62/80668999640.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c3f39a3-ce65-42a9-bb85-112fd21efb2e/sovawilu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bd4ea79-501f-4b15-93f9-bb015a64efd4/47488068007.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c0b189b-4b9d-4bc1-b612-1cc1aa859b9f/48325462314.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba151c50-6fdc-4207-92d2-ac19066145c2/73474148236.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/7873/6803/files/34882439614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2069/8268/files/kabar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1079/3370/files/jurediwemipuferavupugikuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/3023/5304/files/jalasererovafaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5023/8101/files/4460939836.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8895 5548 bytes
SHA-256: 9afadad2d60983e85b0c569f1b997ffa3099726c0e230f75f2befed4f16951da
font_01_sfnt_off00009b50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B50 13888 bytes
SHA-256: 4243645f92f0f4c5ca0de888068f29436967a430ae432bf18b97172906a1786c
font_02_sfnt_off0000c6ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6AB 16132 bytes
SHA-256: d9b012042df5fe8dc074c42eae0f7627b15178249d85eb70dc7afc452d134ec7

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