Malicious PDF — malware analysis report

Static analysis result for SHA-256 00d022f6043867ba…

MALICIOUS

PDF

86.6 KB Created: 2021-02-27 02:48:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: d91678b03ab1d819723d22fe3f7856b4 SHA-1: ad67706213eed0d26e2192730b67b6e152c3a407 SHA-256: 00d022f6043867ba8c0323cf7da2579d7abef7444dbd76a7ef5f0d1b3d4950f0
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many pointing to disposable domains, indicating a link farm designed to obscure malicious destinations. Heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'ML_NYX_PDF_MALICIOUS' strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mezovuduw.ru/wb?keyword=adverb%20opener%20examples PDF link annotation
    • http://nekuwagibajese.getenjoyment.net/eureka_airspeed_unlimited_pet_rewind_upright_vacuum_cleaner.pdfIn PDF document text
    • http://bekopomulasebi.getenjoyment.net/92988402512.pdfIn PDF document text
    • http://zipubezexupoka.mywebcommunity.org/55752223208.pdfIn PDF document text
    • http://majikok.mygamesonline.org/15526022982.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448103/normal_5ff4e327d65f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491933/normal_5fd119dcf0a66.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383794/normal_5fed23e7ef623.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412767/normal_6001d190c4f99.pdfIn PDF document text
    • https://cdn.sqhk.co/zuronenom/zYiiHjh/toxemefupetikuta.pdfIn PDF document text
    • http://valamivu.22web.org/pivilozudivanaxofivetozot.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/woneketelak/motorola_cp200d_battery_life.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/scrabble_games_online_free_without.pdfIn PDF document text
    • http://regenazuwirege.epizy.com/42138266996.pdfIn PDF document text
    • http://jewexaruwibel.rf.gd/tibodabezaluzalatet.pdfIn PDF document text
    • http://kopepupofi.rf.gd/32478055983.pdfIn PDF document text
    • http://puwomuf.rf.gd/will_and_going_to_exercises_worksheet_doc.pdfIn PDF document text
    • http://luzeparuzibez.rf.gd/perkembangan_teknologi_sistem_informasi_akuntansi.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_off00011549.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11549 5364 bytes
SHA-256: ad36fb585381a66e4a3f398d5bd1051d5d4f247631c29d449d5019ed6f19569c
font_01_sfnt_off00012771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12771 11344 bytes
SHA-256: 3ba1cd6d77e5e6a670c8376f3b8a084b8daff748040a8fdaa3707d6450b8a276

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