Malicious PDF — malware analysis report

Static analysis result for SHA-256 62dbb9eae3bd8e2b…

MALICIOUS

PDF

52.5 KB Created: 2020-11-05 09:06:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 51f4074c03381ad250a5d9b34c32500b SHA-1: 2b22126f533e9a5fea874cb2586ecd8470ca81f6 SHA-256: 62dbb9eae3bd8e2ba57cca201384c0906a1a3aba8c64fd6d4b8f52f89191fc43
94 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 an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ttraff.link/123?keyword=what+is+eps+in+pokemon+go In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366010/normal_5f86f5d59d3e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366993/normal_5f89d02bccbdb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415951/normal_5f950d712abfd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376086/normal_5f94e1222589b.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/padoragog/dopovutezuf.pdfIn PDF document text
    • https://s3.amazonaws.com/murudute/torrent_apps_china.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/sebadazajaxituruvota.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/byu_student_health_center_covid_testing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/821ad203-3b04-4063-baf8-f90f3ebb03b5/17837436583.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea316584-de91-4038-8945-d863b245a345/telepe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b7abcb3-1cd5-410e-831f-751714972fc3/sefujizojupafif.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/beehive_class_9_ncert_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f0962b8-0206-4938-9ff3-2cb9a665a253/see_if_someone_blocked_you_on_discord.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C1A 2888 bytes
SHA-256: a34f6133241b0e53c3cfe1f853016e916a3d7180b6d3b88390408fd04f35e9f6
font_01_sfnt_off0000765e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x765E 5180 bytes
SHA-256: 8304cbb29c947e3820fde5b16b8d6599647e79bcd89e593bffa0820b79bf00ce
font_02_sfnt_off000087ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87EF 11316 bytes
SHA-256: e77501841b0de1c3f1516c3b56cda9080cde4395e0be784ba7ad700368784af0
font_03_sfnt_off0000ae01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE01 16060 bytes
SHA-256: df1d2c903cabdf2976887e260da0b25217edeb5ce2b71f315001024534e8e210

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