Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c79a6439f22d661…

MALICIOUS

PDF

40.7 KB Created: 2020-10-30 12:45:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 2d51aa5e4c68534c13fe97282c8a685e SHA-1: 2d79077ba843b5ca1118038b22332d4787fbcad9 SHA-256: 0c79a6439f22d66179b490e6c57ef05a69a894a29ac7f98701905843cfe7c201
94 Risk Score

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 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://cctraff.ru/strik?keyword=lowes+canada+water+pressure+regulator In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383800/normal_5f9ba80ef3289.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389085/normal_5f989587a0aeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366337/normal_5f8808401c590.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/41066494-1509-4cb6-936d-0d2be9b2edbd/winizewuvazejadin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0ef6619-7566-4926-a54b-397e2064beca/true_colors_personality_test_lesson_plan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e714632a-e836-4e21-8450-8b1e62c014c0/minecraft_cauldron_recipes_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/paradise_bay_mod_apk_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1150aeb2-eb52-4946-874b-a07372b6b12a/76342906539.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/92683013823.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/speak_english_like_an_american_vk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf763700-2de0-40d1-bef1-6c7db07cfe6d/fusolived.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6301816a-df99-4b04-bcac-463202268751/gidagakarapawikedenilu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1da59d88-cbe6-4601-96a7-9a81f72a3ac2/vukepa.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_off00006155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6155 5272 bytes
SHA-256: bec220a018f89c2ca80a3aafc92133ff0210f5eef80b90c9960a424a2207c642
font_01_sfnt_off0000736c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x736C 10176 bytes
SHA-256: 945650dc44d962cd584d8110df20435b2c5674f736261aa51db389fdbf2a9a1a