Malicious PDF — malware analysis report

Static analysis result for SHA-256 5697283d18ecd431…

MALICIOUS

PDF

72.1 KB Created: 2021-03-27 23:56:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: f69154ae65c243a19d1b124c29fec341 SHA-1: d30614b89a45c2c2e0b83b24eed431fef0f839f4 SHA-256: 5697283d18ecd4319fdb7efe4c19f9ca300f7360ba18cbbfacea730a35d70a38
126 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a suspicious domain, likely intended to trick users into downloading malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to a book download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/award?keyword=bertrand+russell+the+conquest+of+happiness+pdf+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4417645/normal_5ffefcc334b61.pdfIn PDF document text
    • http://instapodarok365.site/drawing_down_the_moon_margot_adlerkyjg4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368478/normal_5fee69e596bdc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500910/normal_5fdee5c5e5b20.pdfIn PDF document text
    • http://mxbur.fun/gikagapomekizepekoruzabicnihl.pdfIn PDF document text
    • http://gamowenugeg.sportsontheweb.net/tell_me_about_yourself_interview_question_and_answer_example.pdfIn PDF document text
    • http://opticsystem.website/gizofuboxefufidatodeby148.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449012/normal_6039fb574dfeb.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
    • https://uploads.strikinglycdn.com/files/43a8a131-7289-451e-9f39-be050a123f1b/how_do_you_program_a_wildgame_innovations_trail_camera.pdfIn PDF document text
    • http://tosijikis.onlinewebshop.net/70452517425.pdfIn PDF document text
    • http://zenakezogutomu.onlinewebshop.net/tabibem.pdfIn PDF document text
    • https://08c3cc13-1ce0-4add-927e-a3aed263473e.filesusr.com/ugd/ccf397_14aa8911568745edb780e2f5a9a7aa06.pdf?index=trueIn PDF document text
    • http://fataragoreb.myartsonline.com/campaign_management_analytics.pdfIn PDF document text
    • https://ac3db616-04cb-40f1-8357-c67041f5e20c.filesusr.com/ugd/eda9ba_fda5b10e61854cb8bdd412328ca4bff7.pdf?index=trueIn PDF document text
    • http://wovibojo.onlinewebshop.net/natubotedaxibakot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bc45604-4005-45a8-ba9a-8d6f0f1e84e1/iworld_bluetooth_speaker_system_for_home.pdfIn PDF document text
    • https://a7da3e60-63c8-46c1-a846-eab7df628ed2.filesusr.com/ugd/bba345_961cc6dbddee441b8fb3d6c465afbc4d.pdf?index=trueIn PDF document text
    • https://6baea7ca-81e4-4a11-8410-716433a99462.filesusr.com/ugd/764aaa_ac8de42f70a44b6ea5a66e498ebf5232.pdf?index=trueIn PDF document text
    • http://tapoloferazuziw.atwebpages.com/ez_chill_auto_air_conditioning_recharge_sds.pdfIn PDF document text
    • https://34a711a6-6b77-41b4-a6d5-f55437226814.filesusr.com/ugd/c1ce8b_06bee6ae560f4532b5627b81330803eb.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f323fdf5-1a7e-4079-8b6d-33f59f47e3f2/how_to_reset_my_lg_tv_remote.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_off0000cec5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEC5 5392 bytes
SHA-256: d95efd50ebf7dcb1f8777d841378c893c03a4468b4e3dfbc825c71b66c269391
font_01_sfnt_off0000e11d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE11D 10376 bytes
SHA-256: 75540e40e8aaf60d0683261a0b7053c976946e4222023e8dd643fc8ee9dbadd3
font_02_sfnt_off000104ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104AC 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2