Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbab5aa4e6673796…

MALICIOUS

PDF

76.2 KB Created: 2021-05-12 22:08:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: c5fa37a91eff70674f1b2e87607be4d1 SHA-1: aa4c323e0db6ecd02c80fbaa2ea47e01f45b734d SHA-256: fbab5aa4e6673796da793b6ae4744c8aa1fc624d1ab5e8f70b8ae18008dc7316
126 Risk Score

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 identified as a phishing trojan. It contains numerous embedded links, with one pointing to 'lozipotod.ru', a domain associated with malicious activity. The PDF structure and embedded links suggest an attempt to redirect users to a malicious site, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/strik?utm_term=born+a+crime+book+club PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4386824/normal_600a73335c204.pdfIn PDF document text
    • http://bitcoins-profits.com/xipodeziwejetolukotu2kcno.pdfIn PDF document text
    • http://duwinijuj.mypressonline.com/core_java_interview_questions_and_answers_for_2_years_experience.pdfIn PDF document text
    • http://afracheat8.xyz/rimiragafajebot8b8lx.pdfIn PDF document text
    • http://kavademive.sportsontheweb.net/african_history_facts.pdfIn PDF document text
    • http://kazexezawulozij.mypressonline.com/werajezib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461786/normal_606e250c12d3e.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/jajoxulabojaso/kukemovetenavapexida.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a5208e9-633e-44c5-ab1d-acb5d5438a45/67905910324.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09ab8447-bc6a-468b-b4e4-afa441c55bd6/74972809408.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99508686-371a-4c37-a86c-56ebcbd625c3/depobaretero.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f22d197e-5a41-4ef9-8882-c7a778363c8c/glencoe_street_law_a_course_in_practical_law_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f4adbbf-e576-47a5-bc59-a3af8037bf3b/16820242628.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1df7c018-caea-4d00-b0b1-8a0914b84bd7/how_do_i_upgrade_my_fios_router.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/sofizavubanabep.pdfIn PDF document text
    • http://doritiwenoxa.onlinewebshop.net/tomozip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8965a176-4cb4-4aba-b2bf-cf3e2c502439/poliledejut.pdfIn PDF document text
    • http://wurebosuloxu.myartsonline.com/38324136694.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abe9c0f0-1d69-4a6a-82b2-80e73395d62a/seamless_bible_study_answers_week_1.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/simodedon.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_off0000ee76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE76 5020 bytes
SHA-256: 9b50e6b6f95c2a9f8a3a3c7d9bff3d49c11f48ab5b47df5c4014ddfffe4d8855
font_01_sfnt_off0000ff77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF77 10984 bytes
SHA-256: 228bab979e22310737a93fc7cceb79e1594a697998a9a887425b607f1f0e5c45

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