Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a0ddd92aa4b6293…

MALICIOUS

PDF

80.2 KB Created: 2021-03-17 09:08:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: a126245387711af806c7d0190a7cc07e SHA-1: bf24b13a09ca3e6c0594a7ebdf96c5395e12bba4 SHA-256: 5a0ddd92aa4b6293d92d76803d552967d93be08b670268b8b1a419d116153a0a
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains heuristics indicating it is a link farm on disposable hosting, with numerous embedded URLs. The primary URL, 'https://baarspo.ru/award?keyword=hedging+strategy+in+forex+pdf', suggests a phishing lure related to financial trading. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing campaign.

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://baarspo.ru/award?keyword=hedging+strategy+in+forex+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4499979/normal_5ff58907b54c0.pdfIn PDF document text
    • http://vbnmcxz.xyz/aaru_cut_songs_masstamilanbs48j.pdfIn PDF document text
    • http://yarrebitteh.online/pride_and_prejudice_movie_watch_online5tb90.pdfIn PDF document text
    • http://paruxezogu.mygamesonline.org/ximibegosofomopogaxen.pdfIn PDF document text
    • https://cdn.sqhk.co/rufosopufu/nQnJngf/faze_3d_logo_template.pdfIn PDF document text
    • http://de-bewertung-id2842384.icu/classical_guitar_classes_near_mehfkq7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414502/normal_6004b721e6e5a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464870/normal_5fff7130ad18c.pdfIn PDF document text
    • http://luminar4-download.xyz/reposomutozeloweketovugzh.pdfIn PDF document text
    • https://cdn.sqhk.co/nivodoruw/fjjfZbG/60358077556.pdfIn PDF document text
    • http://testersairf.xyz/75632827516ng3hu.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/daraniwekamidir/android_service_binder_tutorial.pdfIn PDF document text
    • https://6f8cb219-4830-455d-9ced-b55e65700e85.filesusr.com/ugd/fd30ac_9aa6e431bfbb434e84d8bdbb6c80e7ee.pdf?index=trueIn PDF document text
    • https://9c12218e-e157-4070-b33f-4467b3cb42bb.filesusr.com/ugd/0c60a0_f77c7983bd914d4380010d5c2f5595c0.pdf?index=trueIn PDF document text
    • https://49432a94-54bc-4d13-9d12-ea41d731e1b8.filesusr.com/ugd/a7c689_16c7e35723764fd184acc005716bd9c7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sizabo/91170867587.pdfIn PDF document text
    • http://wovibojo.onlinewebshop.net/why_do_babies_get_fussy_during_leaps.pdfIn PDF document text
    • https://6bc61794-ec17-45f1-96eb-8bed4cd57308.filesusr.com/ugd/217b8a_73fea823e6ba4bb98be47f55a802ec81.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/boston_tea_party_primary_source_analysis_worksheet.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA25 5308 bytes
SHA-256: 4900d821e7ed2c0afb79586f1812043d92789a57ab0e1cdd8e8687cbdae9d164
font_01_sfnt_off00010c58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C58 11108 bytes
SHA-256: 15e7b4aebdd85d02ac19bc9474a1ac6cb8fb2c861869794ff80b3ce16906dadd

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