Malicious PDF — malware analysis report

Static analysis result for SHA-256 d29df82f741984f7…

MALICIOUS

PDF

49.7 KB Created: 2020-11-04 05:18:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 097f6dc4fa5fd4b73b3c19e3b6d158f0 SHA-1: 255903b2d339c6474d3b32bd8bf62381186bc40b SHA-256: d29df82f741984f79d5fd0688ec5f6a9256102bc7b55dcce3d4cf7ad3619d45e
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.me/123?keyword=sonoma+cigarettes+official+website In PDF document text
    • https://desaviguwogo.weebly.com/uploads/1/3/1/8/131871994/4780375.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/1515306.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/xojafemori/kowilejoxoruga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1d86e8f-42af-43fe-9611-b05d2baa50de/57328673565.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/70036425788.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/writing_academic_english_alice_oshima.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/34675996954.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f34b2c9f-8c1a-4169-a563-08872deab383/91743054277.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2f98b82-b16f-41cb-9e03-ca9a83d37ede/63752354229.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2af78a06-133f-4997-918b-3a5300110ed1/10506655912.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eede0c66-b17f-4bd1-bc0c-a48d699d4346/betulusiluzotare.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ff4ceae-57c9-4c65-875c-cd5a6b037c68/luwutilasupufuper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bae4350-9d15-4887-b786-d3b5aca5db5d/16316214597.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/315b238e-7261-4c54-a610-7e3f5df4fb9d/13098401341.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/bank_exam_syllabus_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/500g_to_oz_butter.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6005 5536 bytes
SHA-256: f3dec4692ff68eea83a7c1cd0dcf8b3b0e27769e1586b5b2f11dbbb02c2a3658
font_01_sfnt_off000072d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72D2 10464 bytes
SHA-256: 80bea9432f1270f35d12b4b0e80b28a10dabcb6fe92992847cec4d2aa7005fd7
font_02_sfnt_off000096a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96A5 20812 bytes
SHA-256: 1a61e3a7a138b726a2a93ee17e7e513f85e5b27d8d52b31469715bf991ce9e0f

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