Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc48d3de592761e5…

MALICIOUS

PDF

71.4 KB Created: 2021-03-03 19:16:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e775a969019fdd67d369b65ab4ac1104 SHA-1: ed2f98f27d35b76a79c5127bcd493f52281a31f4 SHA-256: fc48d3de592761e555e2656de793a29f832e50785517c519ac62673038ef703e
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://crophysi.ru/award?keyword=mini+cooper+service+price+uk In PDF document text
    • https://cdn.sqhk.co/daxerarugak/g3E0gcC/vintage_camera-_lomo_light_leak_photo_editor_retro.pdfIn PDF document text
    • https://losarofimet.weebly.com/uploads/1/3/1/3/131384333/708ebe0f.pdfIn PDF document text
    • http://trokot-newshop.online/zajeluwesiteka9z6ea.pdfIn PDF document text
    • https://kazirevuteguzug.weebly.com/uploads/1/3/2/6/132681824/zisadamobozi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369763/normal_5ffb3f8b99aa6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421215/normal_5ff78784c89e7.pdfIn PDF document text
    • http://libertinemodels.com/what_does_the_red_light_mean_on_a_roombadga5t.pdfIn PDF document text
    • http://mumolazesinidix.getenjoyment.net/problems_as_opportunities_quotes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490542/normal_5fed6b6e7d329.pdfIn PDF document text
    • http://dotixomovi.sportsontheweb.net/62160171550.pdfIn PDF document text
    • http://uose.xyz/amorous_dustin_guideevgz9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kupikobu.epizy.com/corrugated_bitumen_roofing_sheets_b_q.pdfIn PDF document text
    • http://ravesuvanobil.epizy.com/72760877501.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_off0000dc9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC9D 4816 bytes
SHA-256: 06a7cb196019eb470855586f10718b9347c650fc5304275c2ed6892515f7b33a
font_01_sfnt_off0000ed28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED28 10380 bytes
SHA-256: 925cfbbe045efc2abb499001104abc51b6193fb3118d2340aee26a9dab5c894c