Malicious PDF — malware analysis report

Static analysis result for SHA-256 c998c56fab5fd63f…

MALICIOUS

PDF

84.9 KB Created: 2021-03-13 16:22:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 35c8fb89367d493fd8732986a59f2b92 SHA-1: 9f51d0a5b875b9be452cf34e48d6bf2117012fb4 SHA-256: c998c56fab5fd63f9c6c6179392da84bb80ebdd5410ba484c2392da412e404be
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/123?utm_term=blank+airline+ticket+template PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4456143/normal_5fc8b2efe8948.pdfIn PDF document text
    • https://cdn.sqhk.co/gemadaruvow/Y0gj4pk/tadujolekavuvenepidima.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490534/normal_5fcd6543dee7d.pdfIn PDF document text
    • http://bibivire.mygamesonline.org/61982680787.pdfIn PDF document text
    • https://cdn.sqhk.co/zesonixiv/ijiahhV/14529207399.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385613/normal_5fe1fcd57cb45.pdfIn PDF document text
    • http://rubewox.sportsontheweb.net/god_is_disappointed_in_you_christian_review.pdfIn PDF document text
    • https://cdn.sqhk.co/xepiriza/jpIhr2W/car_cartoon_game.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458826/normal_5fc9e85224704.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453560/normal_5ff6bdea122fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447097/normal_5fe16a8ceca7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465905/normal_604c9e51f4156.pdfIn PDF document text
    • https://cdn.sqhk.co/zezinojox/iGhilhc/semegigupegotuwizatos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464530/normal_600f36b8bba4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370076/normal_603bce6c181ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369671/normal_603819aae0fad.pdfIn PDF document text
    • https://cdn.sqhk.co/sujubowip/fshgXy3/47442570099.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463264/normal_6049995c9ab2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371247/normal_601448942d3ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379487/normal_603c48c6dff81.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/b6a52c76-0eae-496a-be96-ecc7bc85ef9d/mercruiser_5.0_mpi_oil_change_kit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3741091f-7e65-42e8-bbe7-75cbb9d5075d/the_rabbit_who_wants_to_fall_asleep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8ecef5b-ebf4-4adb-a832-8fd2ee0f3ee0/68910338532.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/287f90e1-7d63-434f-95ff-8231c9aa3797/public_speaking_skills_for_students.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1a98590-db5d-405b-96f5-125e6c517968/beethoven_moonlight_sonata_free_sheet_music.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB43 5012 bytes
SHA-256: aeecf5ae1e37d8db7f30fc8ffddcbf3961bc215610e21ad35ac844971ca39387
font_01_sfnt_off00010c40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C40 10232 bytes
SHA-256: 7fdc631628757d19d560441daf8dbcced166965a0ab3b64a8d085ea3a77180a6
font_02_sfnt_off00012f66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F66 16080 bytes
SHA-256: 82056dbd961dfb06902bd92896d68141c9dfb980cb4a86826acd1996fb016f58

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