Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfac9930fe5b4aed…

MALICIOUS

PDF

38.1 KB Created: 2020-10-03 20:37:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 90357db469f426b89415a0e9302fa6d5 SHA-1: 9780b35a09428ae14c69673632d1ab136fec26fc SHA-256: dfac9930fe5b4aed663e2d0da9009775e548e33750c0ff58c103154a7f5ed6b2
184 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.
  • 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.
  • 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://cctraff.ru/strik?keyword=head+custodian+study+guide In PDF document text
    • https://site-1036936.mozfiles.com/files/1036936/dopusoze.pdfIn PDF document text
    • https://site-1036981.mozfiles.com/files/1036981/nuperelirax.pdfIn PDF document text
    • https://site-1036962.mozfiles.com/files/1036962/favebijafipimavozi.pdfIn PDF document text
    • https://site-1037028.mozfiles.com/files/1037028/47074790315.pdfIn PDF document text
    • https://site-1040503.mozfiles.com/files/1040503/rovebad.pdfIn PDF document text
    • http://files.womenofthemorningstar.com/uploads/1/3/1/3/131398177/mupogomofokeluluf.pdfIn PDF document text
    • http://dijewan.wednettraining.com/uploads/1/3/0/8/130814729/5782baa4610549c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/7197fa2d-e113-42cc-b0e9-b0e95aaa5ca9/tikudoniduvovinosebezu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7749e12a-f9f5-41f6-858c-309a8ba6d1ce/74210062912.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb8e447f-b030-4cd0-a705-be1b9c05a03e/funilado.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb8df842-880b-4226-bdc3-05199c8cca56/delafelox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/8183/0052/files/florida_homes_realty_and_mortgage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5732/7521/files/51980889332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6207/3246/files/ribosoduril.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8188/3047/files/2000_chevy_s10_manual_transmission.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8014/7359/files/beauty_and_the_beast_broadway_script_act_2.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004964.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4964 4924 bytes
SHA-256: ad7a6393ff52f23ad4d46a964dee4372eb3eb4a6ad47d58e8a69a5b9edb40580
font_01_sfnt_off00005a37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A37 10328 bytes
SHA-256: b4d8238fa516cadb8c9f5aab6c7baa51082e6ab7e73b48045e99d2ac1e979922
font_02_sfnt_off00007d81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D81 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

Open this report in the interactive analyzer, or submit your own file for analysis.