Malicious PDF — malware analysis report

Static analysis result for SHA-256 015dd88bb12a1fcf…

MALICIOUS

PDF

85.9 KB Created: 2021-05-12 10:54:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 9dcb2d84679c1e26bcdc2c2d87da3738 SHA-1: d33c5a91855db77ec3e1d72937299546949d821f SHA-256: 015dd88bb12a1fcfa5f08f344e40cefd36202a847a6af3e206aa6bfdc2d645b8
126 Risk Score

Malware Insights

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

This PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent link leading to 'xezojetit.ru' disguised as a manual for an 'Irritrol controller rd 600'. The PDF's structure and the presence of many disposable domains suggest a link farm designed to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xezojetit.ru/strik?utm_term=irritrol+controller+rd+600+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4481058/normal_5fed4ba14f9ed.pdfIn PDF document text
    • http://kejoxemubogese.mywebcommunity.org/kaluzonojudusoxixifib.pdfIn PDF document text
    • http://wonozudobitisog.scienceontheweb.net/todujebivolobet.pdfIn PDF document text
    • http://dewisazovuvoxi.mywebcommunity.org/dukevoruzazufizu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401505/normal_6041c17fa7e5e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421983/normal_5fce6792432db.pdfIn PDF document text
    • http://nunovoxiwanafuz.getenjoyment.net/zomew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368227/normal_6068d4b6207f4.pdfIn PDF document text
    • http://nawemofukewo.medianewsonline.com/september_monthly_current_affairs_2020_adda247.pdfIn PDF document text
    • http://winovigamaj.mygamesonline.org/how_much_is_a_bowflex_bike.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366017/normal_604ff1481887d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390055/normal_60218928c5a92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413564/normal_6011df433ea87.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483081/normal_5fc571cbec01d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://gumizaxewa.atwebpages.com/20966113892.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad4c3c44-1f23-4e62-a185-bdb32ba4c2b4/36164133075.pdfIn PDF document text
    • http://gupatevefojip.myartsonline.com/sanwa_multitester_yx360trf.pdfIn PDF document text
    • http://jowokepo.atwebpages.com/wovamufejafaruv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5ff8362-8a24-41a9-8258-54c2cc376613/68524676757.pdfIn PDF document text
    • http://pikaderobiw.atwebpages.com/is_windows_movie_maker_available_for_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13a274d5-6f23-4f09-82dc-fe5b78e4c3a1/where_can_i_find_sat_practice_tests.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6869f359-1283-40ec-8138-2c65d63fab03/sample_self_evaluation_for_executive_assistant.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b0c35f8-47d1-41a0-8904-748a5cba2411/deep_learning_python_scikit_learn.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d74bfc34-5f80-44af-83a6-0f27193080d5/dikulugebogad.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fdf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDF5 5020 bytes
SHA-256: bec553e5e914265d984ff2d5571c6a00197e4fd921948c290981a4671c0b19c8
font_01_sfnt_off00010ed8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ED8 12792 bytes
SHA-256: f6316d7a5f0b3efb2cc7336d459196e307216c55b86e30e813798c6403de64e2
font_02_sfnt_off000139d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139D7 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361