Malicious PDF — malware analysis report

Static analysis result for SHA-256 b18e29fbe5484ae5…

MALICIOUS

PDF

37.1 KB Created: 2020-10-01 04:20:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6ab7527633f54c80c3308509bef24094 SHA-1: 9a0cd3b715dcf27277a8a35e6a71b20d9909e90f SHA-256: b18e29fbe5484ae5481456774658a66d9ba9c1035d47f6f5cf0f526713e8cd6e
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://ggtraff.ru/strik?keyword=securing+baritone+bass-+baritone+and+bass+voices+pdf In PDF document text
    • http://sulij.paleoturtles.com/uploads/1/3/0/8/130874496/wodiwonatujijo-bakukaminaw.pdfIn PDF document text
    • http://files.travisrebelband.org/uploads/1/3/0/7/130775893/menuripeginu-gorog-dexemopo-pogogo.pdfIn PDF document text
    • http://files.growinglegacymovie.com/uploads/1/3/1/6/131606260/9577387.pdfIn PDF document text
    • http://xagokerek.nottinghamcathedralmusic.com/uploads/1/3/1/6/131606508/92db19ee26f.pdfIn PDF document text
    • http://files.hoghunting.ca/uploads/1/3/0/7/130776150/rakakajula.pdfIn PDF document text
    • http://files.travelonlywithanneb.com/uploads/1/3/0/8/130813606/nesufopodakugefomas.pdfIn PDF document text
    • http://fogowi.azanow.org/uploads/1/3/1/6/131637016/murupibipu.pdfIn PDF document text
    • http://debujixus.tailwinddelivery.com/uploads/1/3/0/8/130873998/minex.pdfIn PDF document text
    • http://desalar.granburyroofers.com/uploads/1/3/1/4/131452883/8dc47568.pdfIn PDF document text
    • http://nefusivu.aaronlafond.com/uploads/1/3/0/7/130739560/sitokijugizawar-kemug.pdfIn PDF document text
    • http://dewotow.thewardrobeclothing.com/uploads/1/3/1/4/131437736/lugubana.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/1/0434/8225/1421/files/36455731132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3391/7590/files/free_game_battlefield_4_for_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/2333704084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0037/5707/files/elite_pressure_cooker_manual.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_off00005341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5341 5624 bytes
SHA-256: 4d8eb3f51c22c065bdeb65d78ce4fa040357137cd8a773323abc143877e2ca39
font_01_sfnt_off0000667e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x667E 9660 bytes
SHA-256: 678b65da766796781679a113e2f322d1cb596a5fbc7e99414382e027e4e0fc46