Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8c07a8adf9437c6…

MALICIOUS

PDF

43.6 KB Created: 2020-10-08 11:54:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4b0cb4c622cdad4f1740a6d796c8548a SHA-1: 0c455fa0399de5ac6697d8bc6d55e5628f6188db SHA-256: f8c07a8adf9437c6a10a06184dc0944c0492e1d7fd20bdad26715f6b9e62e13d
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.club/pify?keyword=como+perder+20+kilos+en+15+dias In PDF document text
    • http://kesavawid.ozonatrace.com/uploads/1/3/2/3/132303388/9073529.pdfIn PDF document text
    • http://files.shareourlove2017.ca/uploads/1/3/0/8/130874125/4999351.pdfIn PDF document text
    • https://site-1037022.mozfiles.com/files/1037022/bizevolejekekukaga.pdfIn PDF document text
    • https://site-1037188.mozfiles.com/files/1037188/59091390381.pdfIn PDF document text
    • https://site-1038970.mozfiles.com/files/1038970/mivowagalewuriza.pdfIn PDF document text
    • https://site-1037122.mozfiles.com/files/1037122/36722016744.pdfIn PDF document text
    • https://site-1043455.mozfiles.com/files/1043455/16482180050.pdfIn PDF document text
    • https://site-1036898.mozfiles.com/files/1036898/9691846426.pdfIn PDF document text
    • https://site-1036911.mozfiles.com/files/1036911/ranidinemagun.pdfIn PDF document text
    • https://site-1038572.mozfiles.com/files/1038572/79000270036.pdfIn PDF document text
    • https://site-1036671.mozfiles.com/files/1036671/21261958365.pdfIn PDF document text
    • https://site-1044115.mozfiles.com/files/1044115/pagixafere.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/1/0433/3237/0584/files/wavenun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4158/5314/files/2008_yamaha_big_bear_400_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8420/9056/files/drill_press_laser_guide_attachment.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_off00006957.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6957 5524 bytes
SHA-256: f9791bb04430f305ba4aaa3d14389eeb7286ceba1dcb6bb4564224d052cd8ea1
font_01_sfnt_off00007c0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C0A 11040 bytes
SHA-256: 0cc38c2bdfb57aa5dc57468836d88e64fc58e80087d20cb024283a7315d98ba1