Malicious PDF — malware analysis report

Static analysis result for SHA-256 76335f01191d2bb0…

MALICIOUS

PDF

79.6 KB Created: 2020-12-17 02:46:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f9e045f09cf4af0c7314e88b383ed349 SHA-1: 906046fd5087242ea499464d0a533d34fc14ad5b SHA-256: 76335f01191d2bb0c8ffd7a5b00666952c3f6b5250a1cc9e8a27fef4169afaeb
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'gettraff.ru'. This URL is likely used to redirect the user to a malicious site, potentially for phishing or malware distribution. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL suggests an attempt to trick the user into clicking it.

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
  • 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://gettraff.ru/123?utm_term=borderlands+the+pre+sequel+classes In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369518/normal_5fa3cb1f9d35b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475852/normal_5fc17e9645e34.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc79814100abc42af3e4ce9/t/5fcc4df533187724c4e6da08/1607224822320/airasia_live_chat_not_working.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6bd3d39503a47f6f8a2a0/t/5fc8db4490a4f8549d82e546/1606998853023/cross_stitch_kits_christmas_ornaments.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc70c64f2297e36a9fc4e22/t/5fcb20a826a2be7f6ddf51a7/1607147688828/arenanet_change_email.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1583bff13940aa242bd98/t/5fc58f307acac6192a803494/1606782769269/planner_2019_to_2020.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcf5a13cd9942793f279433/t/5fd1b50e0f163860c7ade23d/1607578896576/mini_guns_omega_wars_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/taarak_mehta_ka_ooltah_chashmah_image.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/brochure_design_template.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc55f6d5bcb0228a2a0640f/t/5fd0175f5347e801a813941f/1607472991850/59945605886.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dd745bcb0228a2824d01/t/5fc30c0d145a8629dc153153/1606618125396/wasefebenot.pdfIn PDF document text
    • https://s3.amazonaws.com/defujo/singapore_fitness_industry_report.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/louisiana_law_filing_a_false_police_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20dd9dc3-0228-44bd-97a2-157807340aea/lesson_8.4_skills_practice_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c221d8f-5360-4396-9f27-3847e63057ab/kenonixidunikekigasalaxi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc373c8df132613bbcde1a1/t/5fc3f14208845d092403430f/1606676802474/57324677202.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/free_tv_show_and_movie_apk.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_off0000fa92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA92 5336 bytes
SHA-256: 4c1696ff66587a08c8cb7b7d78b312b8472fbdfe9e6ac994bfd7795c639636d8
font_01_sfnt_off00010cab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CAB 10892 bytes
SHA-256: ab5761ad3a3104da2d0fc2b0d98eab7e31c00258a431c0aa1d764ff1b96030c7

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