Malicious PDF — malware analysis report

Static analysis result for SHA-256 4aedcfefacb7e2ea…

MALICIOUS

PDF

72.8 KB Created: 2021-02-25 20:53:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6cb56c712334e01d050288599ce55946 SHA-1: 48b182cdc20b8e71ec8ff9208e22669e85bc08bf SHA-256: 4aedcfefacb7e2ea8ff33de833a9ea907c38bb5b42944244ad9df7345ad6514a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/award?keyword=what+is+molecular+dna PDF link annotation
    • https://cdn.sqhk.co/xevowuto/JLhOjju/download_best_file_manager_for_android_phone.pdfIn PDF document text
    • http://auto-fishing-rods1.club/2007_kia_sorento_service_manualc48kn.pdfIn PDF document text
    • http://jokeriz.22web.org/frigidaire_fghc2331pfaa_manual.pdfIn PDF document text
    • https://siromalad.weebly.com/uploads/1/3/5/3/135312661/pekiwefewupar.pdfIn PDF document text
    • https://cdn.sqhk.co/zuwiwejagub/OieQDhh/earn_to_die_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/lepudijazur/wmjeDja/gallery_stories_for_instagram_games.pdfIn PDF document text
    • https://cdn.sqhk.co/terisuzuji/NidgdsA/67274541846.pdfIn PDF document text
    • https://dunogijejuj.weebly.com/uploads/1/3/0/8/130813547/7871588.pdfIn PDF document text
    • http://streamsweets.com/zasotoxivumoridebipepalejqjjxn.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mudasaki.epizy.com/funny_picture_books_for_8_year_olds.pdfIn PDF document text
    • http://gozenabuzixi.onlinewebshop.net/kasoxamukeluvife.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_off0000e358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE358 5192 bytes
SHA-256: a015d512f48c59398c16dbc317e3083267d7f6f1f7ed2551c192a92783297e19
font_01_sfnt_off0000f4df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4DF 9980 bytes
SHA-256: ba5721541582fb98ef138d146911571437347a04d7f4bdf39aad7673a16cf6d4