Malicious PDF — malware analysis report

Static analysis result for SHA-256 06425832f117400d…

MALICIOUS

PDF

46.9 KB Created: 2020-10-31 08:43:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: af6b61acf26b6b9ae3a65188927730fc SHA-1: 1271ef846af697fd4909f26f0d74776d0ae114ef SHA-256: 06425832f117400de4ec73a9ca230e53459b0536affe7c64348ba2df006515bf
94 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 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 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://ttraff.ru/123?keyword=asher+roth+asleep+in+the+bread+aisle+zip+download In PDF document text
    • https://bufazori.weebly.com/uploads/1/3/4/3/134377245/molubuwix-feluxep.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/ded95780-223d-4864-bffe-1b8c3714198c/pizagugop.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/aceite_de_argan_en_ingles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/3759/6085/files/cursive_practice_for_adults.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3797/4940/files/75816155983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0506/6788/0635/files/ditodud.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/6860445452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/8385/5525/files/calories_in_long_john_silvers_grilled_shrimp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/9403/1516/files/vape_pen_case_ebay.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_off00007748.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7748 5320 bytes
SHA-256: 5bab74f0746e6cec8b6c6513e9634eced7e2926545dec4695ea6e7883c2aa13c
font_01_sfnt_off00008965.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8965 11388 bytes
SHA-256: cbfcda0a5344b4dc83228cadaf8d87a8c9b3db2e08c2260ef1be1b9687067c7e

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