Malicious PDF — malware analysis report

Static analysis result for SHA-256 fefde79aaf440214…

MALICIOUS

PDF

43.4 KB Created: 2020-10-28 17:38:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: bcc6d1f1e9954c2e1b60f2f9454143e2 SHA-1: 2c272248e0f43b0211f72b15a278c5f588487ef5 SHA-256: fefde79aaf440214941b9e9dd0142bed8d5b58750b7bcf17a2b0b223e24fa470
174 Risk Score

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://cctraff.ru/aws?keyword=harvard+air+hockey+table+price In PDF document text
    • https://s3.amazonaws.com/nitajosasa/banugexatoje.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368487/normal_5f882ed238f39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366047/normal_5f874fee94972.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/10965818516.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370055/normal_5f8b1f03198fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414864/normal_5f95eac92ce68.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/tuwizuzisuvu.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006b86.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006b86.bin)
    • https://uploads.strikinglycdn.com/files/5804df05-5c9f-4a85-8aa4-552742dc8d4c/mofevoxitasezafaxavobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/2187/1522/files/20367469937.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/897a9b0c-6f61-40e8-a7b5-def8c2629123/88788300622.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f102ff4-a2dd-464f-a40f-01f78664104e/jolon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/397277a1-3afc-437c-b49b-a556eefa3f71/fallout_board_game_rules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5017/9999/files/15879253331.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4775dc49-0727-4061-90c5-9ae9a70ef0ba/87978188996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3046/3135/files/cleanout_plug_wrench_near_me.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2094/9403/files/palubu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a7eef33-88ff-4524-9ac6-f3477ed37c32/recuperare_password_computer.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 extracted file (font_00_sfnt_off00006b86.bin)

Related samples 8

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_off00006b86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B86 5308 bytes
SHA-256: 1ad39f5288829e13663e6506324dc51849501915c1c07bcfc3c6de0eaec3a21f
font_01_sfnt_off00007d95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D95 10164 bytes
SHA-256: 1fe240d96ff9a3b2550daa3375580e184f6917d200f10892ebbe60b40a0f6d75

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