Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ddd071d674309f1…

MALICIOUS

PDF

72.7 KB Created: 2021-03-04 03:03:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ea8e6b29298167581ada54aa1735c8bd SHA-1: a9bc86d9c8e4da977bf4e7c1b6a42a910d2edd3e SHA-256: 4ddd071d674309f103472887a84b7b3aaefd0e715ca7dc50e35e38c03ce1873a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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.
  • 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://fokemale.ru/strik?utm_term=old+school+rappers+90s PDF link annotation
    • https://nudadisaxoge.weebly.com/uploads/1/3/4/0/134018155/vadoju.pdfIn PDF document text
    • https://susudomi.weebly.com/uploads/1/3/5/3/135319884/2414840.pdfIn PDF document text
    • https://cdn.sqhk.co/dedesonor/igMZoje/hobbycraft_3d_printer.pdfIn PDF document text
    • https://cdn.sqhk.co/jofijoju/CgijIgc/another_label_eames_bomber.pdfIn PDF document text
    • https://talotemeve.weebly.com/uploads/1/3/1/6/131606578/511fa1bedab2.pdfIn PDF document text
    • https://cdn.sqhk.co/pinebiven/hbibhf4/blues_rock_radio_stations_online.pdfIn PDF document text
    • http://copyrighthelpbusiness.net/lg_fridge_freezer_user_manualyjum0.pdfIn PDF document text
    • https://cdn.sqhk.co/muvotugi/W7xgfge/1050251355.pdfIn PDF document text
    • https://tefuvaxijo.weebly.com/uploads/1/3/0/7/130739162/lofuvataki_vudigebipixami_sofuliz_zebijomusogixo.pdfIn PDF document text
    • https://cdn.sqhk.co/jegamaxegev/gjjZibs/49686399247.pdfIn PDF document text
    • https://cdn.sqhk.co/tunuviju/Zqhf0Lv/99608008486.pdfIn PDF document text
    • http://gramnews.xyz/wipubenowemowabirubasews556.pdfIn PDF document text
    • https://cdn.sqhk.co/wotutovebo/jqj5jeR/stickman_legend_of_survival_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/filodomazora/6jWqFge/pudidog.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/vutame/what_is_the_song_seven_year_ache_about.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_off0000deb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB6 5488 bytes
SHA-256: dd178b6b801cc144fca658689e3f263b1938dad0a215928ff2b4781de6afc61f
font_01_sfnt_off0000f150.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF150 10928 bytes
SHA-256: fa6e4d6921dbb680ed7a24a11fd70dc8aebfd0d8f99d67ae3bd20fddb1e7b23d