Malicious PDF — malware analysis report

Static analysis result for SHA-256 e42cb4ec3a298c4d…

MALICIOUS

PDF

78.2 KB Created: 2021-05-14 13:50:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 7a85d1e2a5157822fe3ea63c53e8ec9f SHA-1: cdda03fd00168d4540a41d38334d62b701c82be4 SHA-256: e42cb4ec3a298c4d4476d02f41a8e4a8097192fd4212ac6d43810c40f5cc438d
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous external URIs, including one that appears to be a lure for watching a movie online, likely intended for phishing or malware distribution. The PDF's structure and embedded links suggest it functions as a link farm designed to redirect users to potentially harmful websites.

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://midufefew.ru/strik?utm_term=call+me+by+your+name+full+film+watch+online+free PDF link annotation
    • http://zugemenelil.medianewsonline.com/2005_honda_odyssey_pax_tires.pdfIn PDF document text
    • https://cdn.sqhk.co/tixuniwe/F6je50y/free_bollywood_songs_offline.pdfIn PDF document text
    • https://cdn.sqhk.co/nupepewomaxu/jVji1pv/directv_login_sunday_ticket.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365546/normal_5fd92edcbfcb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488329/normal_603df5a098d47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386079/normal_605f5ba203949.pdfIn PDF document text
    • http://samemere.mygamesonline.org/44780286746.pdfIn PDF document text
    • https://cdn.sqhk.co/sabumijobude/0Sjh4id/cartoon_sound_effects_soundboard.pdfIn PDF document text
    • https://cdn.sqhk.co/labojime/aFjhAfx/download_game_glory_of_generals2_ace_mod_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gezixerigalejeb.rf.gd/45778346931.pdfIn PDF document text
    • https://a82c121c-2200-4cd7-aff6-47cf910fdadb.filesusr.com/ugd/117c17_100897c00c154144bd87c068013277aa.pdf?index=trueIn PDF document text
    • https://f4dd034e-00c7-465c-b850-fb2d75accad5.filesusr.com/ugd/769f78_72761f6f2b914e62bfaecfcd47d640ca.pdf?index=trueIn PDF document text
    • https://cf4de027-7369-46c2-bf93-d69cabef2b5e.filesusr.com/ugd/868b90_0036104264fb4b0981e2e5fe30e53bdb.pdf?index=trueIn PDF document text
    • http://robatirewixiwol.rf.gd/wiwetagezawanopesi.pdfIn PDF document text
    • https://4dcfe184-cd6c-48f8-9f23-5461c743a1d4.filesusr.com/ugd/cc8533_86ebccd2730641429a82b03386faec1e.pdf?index=trueIn PDF document text
    • https://8ed7b8cb-9bae-4def-ad9b-66b28cd11f91.filesusr.com/ugd/740d8c_6d705c7a7c044e1d91495d87b913d6c3.pdf?index=trueIn PDF document text
    • https://d5fd0048-bb8d-45a1-ba21-28d1cb0b7162.filesusr.com/ugd/5e8de6_3c4e171b65294c508e6fbba604c05a80.pdf?index=trueIn PDF document text
    • http://lixanixuzuki.rf.gd/abrahaminte_santhathikal_full_movie_1080p.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_off0000f3f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F1 5180 bytes
SHA-256: 7a84555c51b61f8c541d59844363b22e88923332c27982f29e12986d9d2da641
font_01_sfnt_off00010582.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10582 11376 bytes
SHA-256: 2624d5030474be200e88ad599c0dbe7e1253b5a94ff52a640b7e7c02c697c57a

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