Malicious PDF — malware analysis report

Static analysis result for SHA-256 970947374df1a3e2…

MALICIOUS

PDF

46.2 KB Created: 2020-11-05 09:05:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 2a0a84e88adcefb49253928d401ec9d9 SHA-1: bfb0b804983866cc5d5046eb3bfb4ebb6dab6bef SHA-256: 970947374df1a3e29d4e709afd1d55388953a4421062afd3a8b3cb6ee73cd79a
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://gettraff.ru/aws?keyword=crossword+quiz+answers+animals+level+7 In PDF document text
    • https://bubiwodepu.weebly.com/uploads/1/3/2/8/132815961/mexifogizalog.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/desenaz/barry_callebaut_annual_report_2017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d36eacd4-cc66-49a5-a213-b602377411f9/3978821424.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/56602278953.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/bataille_de_verdun_rsum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2d56a43-3a16-44aa-a163-f7e71e6760ac/76139778361.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a25b239-e474-4154-8e1e-117bb21db3bb/mount_desert_island_high_school_athletics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca228ca7-0464-4886-88c6-bf020061cf13/wobebonexogelivobiletu.pdfIn PDF document text
    • https://s3.amazonaws.com/badodemebo/pyramidal_horn_antenna.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29db6236-9a0c-4389-bd54-1a986870b430/the_penis_enlargement_bible.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae552015-7d42-424b-b0d5-08d658d4feeb/pibegofubozijidikazix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e69c7a6c-7f77-410e-84b4-1b3194a6e021/fonowes.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67E1 5204 bytes
SHA-256: 37a2aaa9792f6e8bf5ab065bb127b8da466724b416dbcaedf2412720db7e5ec8
font_01_sfnt_off00007991.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7991 10752 bytes
SHA-256: eb6db1bfa5bef00ce51ea492dd76f066094a8146d88b4ae509e0268a52bde8d5
font_02_sfnt_off00009df5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DF5 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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