Malicious PDF — malware analysis report

Static analysis result for SHA-256 01487d1d45f536bb…

MALICIOUS

PDF

68.2 KB Created: 2021-04-24 18:33:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f690fc3dce2eee5ebfbd66c3f43ef937 SHA-1: 38aca3cb72a153daab27f925fd53d01421cb0ddc SHA-256: 01487d1d45f536bb622eccef7b09bd04c620e441b5f11e74572d9f647c4fd7ad
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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=ilive+32+hd+soundbar+with+bluetooth+reviews PDF link annotation
    • http://vizenam.medianewsonline.com/skills_for_project_managers.pdfIn PDF document text
    • http://tuxesimufimiti.mypressonline.com/92443796677.pdfIn PDF document text
    • http://help-ruleviolation.com/44552401575mpyd9.pdfIn PDF document text
    • http://visetazide.medianewsonline.com/sir_arthur_conan_doyle_biografia.pdfIn PDF document text
    • http://sayseedokg.com/what_do_the_names_in_handmaids_tale_meanjxe9u.pdfIn PDF document text
    • http://gadatoreneperil.mygamesonline.org/amharic_phrases.pdfIn PDF document text
    • http://midimox.getenjoyment.net/islamic_books_free_download_in_urdu.pdfIn PDF document text
    • http://rowaxamapitowej.getenjoyment.net/94738995909.pdfIn PDF document text
    • http://wupemokabate.scienceontheweb.net/centrifugal_blower_book.pdfIn PDF document text
    • http://magexaxajatadog.getenjoyment.net/cedar_rapids_kernels_schedule.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5988d68-28c2-46dc-933f-9f0c8b15d875/tp_link_n750_access_point.pdfIn PDF document text
    • http://pigutun.myartsonline.com/mewigatuwozotus.pdfIn PDF document text
    • http://senawoxagijajo.onlinewebshop.net/benim_hocam_tyt_tarih_video_ders_notlar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db6f9ecc-5f7b-4b03-8767-91096ec8244d/gexotodepekidubixu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5eaf044a-1014-40e5-abb9-7159f6a0c917/portrait_photo_tips_and_tricks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d4bf308-3208-4d21-87da-2f67cee94b55/61316751323.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a4e16a6-4490-4d19-a8e6-7fb851a48c0d/asp.net_core_mvc_crud_example.pdfIn PDF document text
    • http://tefetuzuzip.myartsonline.com/vexovobakixogeni.pdfIn PDF document text
    • http://luvabokinoleg.onlinewebshop.net/fluval_306_canister_filter_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/618edcac-5091-4e3f-a9c7-84560de609ae/zodijes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/534dfaa6-00cf-4377-9fa6-0e7a7cd0feba/rdk_03004_error_code.pdfIn PDF document text
    • http://dexizijisub.atwebpages.com/bhagavad_gita_simplified_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c05eb35-e1ba-403b-891f-4002e813bf1f/que_es_la_trombosis_sintomas.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_off0000cf1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF1C 5436 bytes
SHA-256: 2ad88450940628e8f33af87f8cee43fe5d36fcc46258aa30bd75f9851fb72b49
font_01_sfnt_off0000e1a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A0 9872 bytes
SHA-256: 75ce860d1920a2b2f399cc765ccde5355b7ace2213321455890f07d18db7a7af