Malicious PDF — malware analysis report

Static analysis result for SHA-256 650201384401f6a8…

MALICIOUS

PDF

40.5 KB Created: 2020-10-31 12:26:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: bd9aeed6ddf7162276efdfcca1e36838 SHA-1: 3caae8659005e17f13d04ef1535d669cc555b3c5 SHA-256: 650201384401f6a81aa1aa1bb0a118ed713de386ef5e0853cbccb1e54c72883b
134 Risk Score

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.
  • 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.cc/123?keyword=tequila+makes+her+clothes+fall+off+lyrics+kenny+chesney+lyrics In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366402/normal_5f8f5a7356f13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415327/normal_5f99dfb1e53eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369777/normal_5f917b033bdda.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/bdefe674-1999-4eb6-b480-b4cd19ba1432/rowexuga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c45b844-3bc4-4501-bfb9-911a437475c6/vulakivefoxeromitefoxeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7584ddc-5aeb-45dd-8805-7c10c0044b0f/logejipekozajawelasesulut.pdfIn PDF document text
    • https://s3.amazonaws.com/ratixifo/plate_tectonics_worksheet_answers_key_mr_hoyle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4dfdc4c2-9067-4ec6-8595-6a5d6fcb42a1/6307457537.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2f04c18-b918-4e54-b531-bf7012ef55d5/tuxafizakome.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/10099608689.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/marvel_comics_1000_d23_print_run.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/gesetezitemogukumedenis.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/easy_guitar_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/fiwutawaxosaposu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db7211e9-e627-4191-ac78-9b4c9227be67/mokamiwivex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa6ff439-5a73-4c46-8abf-54b3e41fa000/diners_drive_ins_and_dives_memphis.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_off00005909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5909 5360 bytes
SHA-256: 5583ee59dced021fe3a06e839ce04cd6b261253335c45cfddc1655c68ed1de98
font_01_sfnt_off00006b27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B27 12036 bytes
SHA-256: 19edbd34a13bdda69b4f5e33a2fbae2f1b84038ded86f9e274260c055e4e9301