Malicious PDF — malware analysis report

Static analysis result for SHA-256 7446eeee1ae0073a…

MALICIOUS

PDF

38.6 KB Created: 2020-11-02 22:56:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 79e5db9b3eeae0cb048132a65aa88ab4 SHA-1: 539816c3a96fb1f78b935faef4c322c9681e7820 SHA-256: 7446eeee1ae0073af56ae7f6bea75d42212389d0c6d3ccf68aaaad47d65d1911
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and 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 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.club/123?keyword=the+art+of+the+deal+pdf+free+download In PDF document text
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/vedivomevoreto.pdfIn PDF document text
    • https://nipufijupetobug.weebly.com/uploads/1/3/1/4/131482996/sijike-xobadujaxeb-buwugoxok.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/jamokaroxoj/51395823694.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5602855-a671-4349-86f8-cd4812dcbd09/new_hard_rock_albums_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8131a511-850c-4b62-a08d-c5eb342c36df/xebanokapikinukotuxiju.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/macdrive_9_standard_serial_number_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a24b3fb7-27fb-463a-abeb-b900fd6ec970/crazy_craft_1._0_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/156d28a0-4aa1-4300-a921-ffa3bbaeebb4/cinder_marissa_meyer_read_online.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/52866221424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/3170/8072/files/88145136174.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/3295/8878/files/45266313395.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8391482c-8027-4010-854b-9582d68ff8e7/35536222622.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_off00005a01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A01 4992 bytes
SHA-256: 4848dc5f8e2cda9397c49612002eddf8e34ecbfe0fd6b42c668c9b52de70119f
font_01_sfnt_off00006b06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B06 10012 bytes
SHA-256: 795bb817606ceda089eb6ac405009cbe56501f6158cb7f98229ec7c350059210

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