Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bdb41f91c5e7322…

MALICIOUS

PDF

77.8 KB Created: 2021-01-02 13:08:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 49416bb2e7bd4adf40c8a0685c7a85e5 SHA-1: 9d120869808041841416a888b5c04b4e056b4936 SHA-256: 7bdb41f91c5e73228038119f5ff1e69651975dc5cb01b93e883b7c2949251fa1
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 'https://gettraff.ru/aws?utm_term=listening+test+1+crime+report+form'. Additionally, ClamAV detected the file as 'Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0'. The ML classifier also strongly indicated maliciousness. These indicators suggest the PDF is designed to lure users to a malicious site, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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/aws?utm_term=listening+test+1+crime+report+form In PDF document text
    • https://cdn.sqhk.co/wuluzajiroz/iidhcF4/digi_online_store.pdfIn PDF document text
    • https://cdn.sqhk.co/wirowanorax/6TjevRk/ultimate_arctic_simulator_apk_android.pdfIn PDF document text
    • https://cdn.sqhk.co/mugapowejog/Rghh4Hs/the_talking_skull_short_story.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366964/normal_5f874e7b484ce.pdfIn PDF document text
    • https://cdn.sqhk.co/tevotapomow/qhbUiaD/12736209992.pdfIn PDF document text
    • https://cdn.sqhk.co/xenetomapum/iKjbSgd/97366232979.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/9e7d4940-c092-4e02-ad38-0f3a4ba6ddf5/bozepexupo.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/update_android_samsung_galaxy_s2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52ef493c-edcb-45e4-97bd-c412eadc0acc/17398700190.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0ed5949-22e9-4494-aa19-2b57666b63ff/prueba_de_oxidasa_fundamento.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/campanella_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71c39c6b-1e65-4cb3-92e9-7e565ec2efa0/81909986998.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_off0000f4d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D6 5088 bytes
SHA-256: 2388b8625032b5d1879b42dd57a5e6037c4acd06a7c5b829ddb64b1b9b6828a0
font_01_sfnt_off00010624.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10624 10760 bytes
SHA-256: fa612fb23cdde0f6004b72db6c64597171a2b012a5555a500bb11b3953b1d981

Open this report in the interactive analyzer, or submit your own file for analysis.