Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4f634c6d835bcae…

MALICIOUS

PDF

69.4 KB Created: 2021-02-13 03:47:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b0ee30efe614c60a376aedcea93cb2df SHA-1: 0dbb1e9e47b3f3bfdc7179a81aff935697d9ab77 SHA-256: d4f634c6d835bcaeae5ab306f65a34038da39c90273309ae73de0974b54318cc
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://leonvi.ru/wix?keyword=dragon+quest+11+guide+casino PDF link annotation
    • https://cdn.sqhk.co/duwutawuna/PjhGibV/bluffton_schools_sc.pdfIn PDF document text
    • https://tatonipek.weebly.com/uploads/1/3/4/8/134874136/rimewuwotasag.pdfIn PDF document text
    • http://revershjtb.site/fruit_slice_fruit_cutting_machineddc91.pdfIn PDF document text
    • http://7lessons.space/xiriporudowalubetalamilqfmdg.pdfIn PDF document text
    • http://liketime.fun/38533499605swyy8.pdfIn PDF document text
    • http://ourfutures.space/pukapaxunutofznz3.pdfIn PDF document text
    • http://teagreen.space/lisatavg2gfh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/marvel_spider_man_ps4_free.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/zaboso.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/gixefefi.pdfIn PDF document text
    • http://bekelogamaju.rf.gd/38709479084.pdfIn PDF document text
    • http://jefevuxivux.epizy.com/chirutha_telugu_movie_songs_320kbps.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_off0000d471.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD471 5252 bytes
SHA-256: 0ff46547a4448c8d891f9ab9bf19487b02680bb2e26e57af1e1fe0bb91e59349
font_01_sfnt_off0000e65f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE65F 10164 bytes
SHA-256: 93e1a111b2c2550cf58875b6339c1505e5fa96c85208d74250d939ef9b2bed55