Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c3f669764f17d69…

MALICIOUS

PDF

79.1 KB Created: 2021-03-12 16:48:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ac4152367503a74e6c1574918188f3ef SHA-1: 9f9841483a49a6897adf59f87ba19c528302fcd1 SHA-256: 1c3f669764f17d6967c330751b689a888f17438166bcdd09878a3b5b077477ce
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm designed to redirect users to potentially malicious content. The document body, though heavily obfuscated, contains keywords related to 'mp cabinet ministers list 2020 in english pdf', indicating a lure to disguise the malicious intent.

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://jumiwimov.ru/award?keyword=mp+cabinet+ministers+list+2020+in+english+pdf PDF link annotation
    • http://lebuvowune.getenjoyment.net/plan_center_parcs_lac_d_ailette.pdfIn PDF document text
    • http://carinsusa.com/biafran_army_formbfwt4.pdfIn PDF document text
    • http://1-bog.ru/61416459581kplt4.pdfIn PDF document text
    • http://antonioita.fun/95888648590q1y2o.pdfIn PDF document text
    • http://dudakarebonadi.iblogger.org/gaviwopo.pdfIn PDF document text
    • http://loveworld.club/3d_animation_software_for_chromebook_free4dnz0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vomokutamorarat.rf.gd/servio_social_e_meio_ambiente_livro.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/28790260162.pdfIn PDF document text
    • http://notalopelovawu.epizy.com/xurijuwiwizemukademu.pdfIn PDF document text
    • http://jufotafilowor.rf.gd/anisometropia_definicion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4a47fd2-5977-45d4-a542-42d052d47e20/28885117629.pdfIn PDF document text
    • http://mizixizomafupez.epizy.com/68737160083.pdfIn PDF document text
    • http://bogalibamadom.myartsonline.com/what_is_the_impact_of_globalisation_on_indian_economy.pdfIn PDF document text
    • http://zogojazaje.rf.gd/sheet_street_lounge_decor.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/jokojafuvunuvanenaxijekak.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/99960267443.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2b88e77-fe10-412b-b8bc-b23cbde4a6d6/selivumilifujovetak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e2640c9-3065-413d-89f5-cb3165233d7c/9203065704.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c75919c-35e2-41aa-88b8-a567627cd7ff/44534333047.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_off0000f63c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF63C 5988 bytes
SHA-256: 8c988519fb537dbd5978fff4e8a6b7d3c1a69b633fe887062132e2cd29f137ac
font_01_sfnt_off00010a71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A71 10808 bytes
SHA-256: 7273514ee76bb783dace9b4eaee42d2aa9dc500ed0aae8e0b3ef1729dfbb47dc

Open this report in the interactive analyzer, or submit your own file for analysis.