Malicious PDF — malware analysis report

Static analysis result for SHA-256 f05a5f0f0ee12c1e…

MALICIOUS

PDF

68.7 KB Created: 2021-02-14 00:05:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: dba61f6be0d867cd580157ef6d986f39 SHA-1: bc4c8bf9ef48171318d7b9f6611a976ffa3c54c7 SHA-256: f05a5f0f0ee12c1eda6cfda5ac47b4e3cf728b25db35e33f18faa1ba79e266ba
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://jottigo.ru/wix?keyword=dorpers+for+sale+near+me PDF link annotation
    • https://cdn.sqhk.co/fisoxinizo/qiehcPt/sunset_views_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/gizulakofo/j7LgeFJ/vawejuvewipiluvif.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407301/normal_5fdd72d8313e6.pdfIn PDF document text
    • https://cdn.sqhk.co/linewebozid/iajjBji/audio_recorder_smart_voice_recorder_audio_editor_voice.pdfIn PDF document text
    • https://vafukomoruf.weebly.com/uploads/1/3/4/8/134862603/luvobi_kasulumewufapes.pdfIn PDF document text
    • https://cdn.sqhk.co/kufiremikaf/ijiIgeT/porezadiromoketuwezuzu.pdfIn PDF document text
    • http://ziwumaguvogog.iblogger.org/shark_attack_video.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480591/normal_5fde306fb3007.pdfIn PDF document text
    • https://nizevamil.weebly.com/uploads/1/3/2/8/132814567/xefutenitonukowodad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419410/normal_5fed5e390d16b.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/zonivezada/dodge_durango_reviews_consumer_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/86766770438.pdfIn PDF document text
    • https://s3.amazonaws.com/nuselufuzo/grenfell_tower_fire_service_report.pdfIn PDF document text
    • http://kuwademepekipil.epizy.com/big_bang_theory_opening_song.pdfIn PDF document text
    • http://gowamatul.epizy.com/xavamowasaterebufonuneki.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_off0000cffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFFB 5044 bytes
SHA-256: 6c5aa95cf7d2a870781bbadc24b28ee259c5fc0df02c5e28f51489044f00db92
font_01_sfnt_off0000e10f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE10F 10864 bytes
SHA-256: ed66cdb31c6d79b76a4d2b05f4a657a45a98f149ef4fac0a170768ebc055a59c