Malicious PDF — malware analysis report

Static analysis result for SHA-256 304f2933b5e6fce0…

MALICIOUS

PDF

95.2 KB Created: 2020-11-22 00:05:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: adf3aab51f923a85f2acfe85f841be1e SHA-1: 9bb6892e39b0fd9974fc8e055222eefba0c0d58d SHA-256: 304f2933b5e6fce086def901fba0d0cda6c8b5824fcb19c19a4dc6f1b9d5b61c
154 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 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 0.9997

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://cctraff.ru/123?utm_term=invisible+influence+pdf In PDF document text
    • https://xawazexeresav.weebly.com/uploads/1/3/4/5/134527443/8993838619e0f18.pdfIn PDF document text
    • https://jusemeki.weebly.com/uploads/1/3/4/5/134506960/tokeze_bopijunemawerez.pdfIn PDF document text
    • https://fidegobopoj.weebly.com/uploads/1/3/2/8/132815019/0cb5eeb165093.pdfIn PDF document text
    • https://pituluwo.weebly.com/uploads/1/3/1/4/131437949/nusagalek-fidelegiluxu.pdfIn PDF document text
    • https://puvujoda.weebly.com/uploads/1/3/4/3/134326666/8581223.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/zaxuledo/ludize.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/can_t_ariesms_client.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/89533475323.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49d512b2-7da6-4527-a6e0-b25440249f7a/77914416569.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/mobogenie_app_download_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/gipotekiburiposiwumimi.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/bommalata_telugu_movie_songs_free.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_off00013a61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A61 4980 bytes
SHA-256: 19e432c36e22aa84b5a927252bbe7711adece75af6d52ca706fcf4eebd2f9629
font_01_sfnt_off00014b6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B6D 10808 bytes
SHA-256: 8ebc902976f7568980a98237da64a819416a87032afa76ead9d1dac9659931c7

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