Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ae6bf0ec2864ea8…

MALICIOUS

PDF

79.9 KB Created: 2021-06-02 22:04:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b918e332ff792d13a86598a08b63a44f SHA-1: 72ba4327d4192ef13a17cedac97d1cbd3986227b SHA-256: 8ae6bf0ec2864ea813f3ebfe8566d25cab2073d34d2d4debf1f31fddff86f401
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 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://huntic.ru/pbw?utm_term=r%25C4%25B1fat+%25C4%25B1lgaz+karartma+geceleri+konusu PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393485/normal_6027225ff3118.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365656/normal_6034dce979157.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474446/normal_6054e31feb382.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459470/normal_605c692c97fc9.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4383695/normal_60b33baeb6114.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467286/normal_5fe878fd09cba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476783/normal_6036f264cacb9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530171/normal_6044f3a7e331f.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4414851/normal_60b0075f9ea3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476123/normal_60142e666d3e3.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4497697/normal_60b36bf810c50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476302/normal_602d013ee7e6c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501501/normal_606367de727e6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450884/normal_5febeb21da54e.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/4700f9a4-8580-46db-ae12-db944c68111b/a_short_guide_to_writing_about_film_9th_edition_ebook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a7044a0-bfd7-4671-8bfd-121723e6e362/zilutijotogulelop.pdfIn PDF document text
    • http://gulisapil.pbworks.com/f/robert_kiyosaki_fake_summary.pdfIn PDF document text
    • http://kufujibumufa.pbworks.com/w/file/fetch/144412488/que_es_el_lider_autocrtico.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_off0000f656.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF656 5352 bytes
SHA-256: 5f98facbd4f136a9026eb2247409fd8f8a7b0c9dff794fb7c2c21e37599680a5
font_01_sfnt_off0001088f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1088F 13000 bytes
SHA-256: 5223be786e9dd9f679500ebc48d5da893eeadfefbe2c4e267a4ff456d5d62032

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