Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e0f99371ab29e11…

MALICIOUS

PDF

40.4 KB Created: 2020-10-31 06:45:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 15036b9d81629866247226dfd66aea56 SHA-1: 97f946bd2eff0b495c16b684fe08b3fd354f7786 SHA-256: 2e0f99371ab29e1168a807bf6b218d6c91375df8ca8e2c1781356836b3070b44
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the URL which appears to be a lure for a transmission rebuild manual. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

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://gettraff.ru/aws?keyword=t5+transmission+rebuild+manual In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/regovadeje/definicion_de_bienestar_emocional.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8721/7311/files/tajepuwakaja.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/43270672000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/5977/1029/files/gidojarikikoxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bd8f70b-ce5a-4647-8c20-d8a32d31a136/the_lords_of_creation_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f94b562-7676-4613-9ae2-492a68c3083e/2903647886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/3319/8498/files/profit_first_book_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/51929662918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/6937/2069/files/30711680314.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/problem_solving_101_bahasa_indonesia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/570a2eb0-2e8d-499c-9729-c35f8518c83e/41628617372.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_off0000612d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x612D 5184 bytes
SHA-256: 690ed73dbd2b17ecfbd84bfe4d172203867cf8ea05eb5295fb834ad1df6c001d
font_01_sfnt_off000072b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72B4 10080 bytes
SHA-256: bea7dfc861a012c232f2319a7146bd4e887a7a7f11200c0474ae75ce2a9e5a81