Malicious PDF — malware analysis report

Static analysis result for SHA-256 b00aac6939dfec03…

MALICIOUS

PDF

55.2 KB Created: 2020-11-07 00:55:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 9cf96f41e07e376734d20406a6a067d6 SHA-1: 6a8e8dd1b87912bbf993b1fb9e575771b0f4a0ca SHA-256: b00aac6939dfec0359844e40a683812161a17e091f6e287b8c061bd28c6b2817
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://rugazodexozapef.weebly.com/uploads/1/3/4/4/134480570/sajapolajasisi.pdf.
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/aws?keyword=rules+of+exponents+0 PDF link annotation
    • https://rugazodexozapef.weebly.com/uploads/1/3/4/4/134480570/sajapolajasisi.pdfIn PDF document text
    • https://lepuxodotedob.weebly.com/uploads/1/3/4/5/134507089/5a52e2.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/leguvefu/apostle_john_eckhardt_books.pdfIn PDF document text
    • https://givolajokofe.files.wordpress.com/2020/11/japatewajaliwififu.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/wibuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/957e4979-278f-4f81-91c5-ce21d511fe47/christmas_ball_game_with_saran_wrap.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/archery_merit_badge_worksheet.pdfIn PDF document text
    • https://sosomaper.files.wordpress.com/2020/11/71075369121.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/fukidobodovijotuwitizemin.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/68904751320.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuzo/ne_yo_movies_list.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/characteristics_of_acids_and_alkalis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa048c0e-62e4-45d8-a0a1-ccfcddad558e/84365845305.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/ansible_playbook_examples.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A52 4640 bytes
SHA-256: 0c9ecfb6afc62d9b2e0f3fb4fff46ae0f45f30fd537024519ad8f9ca51a9d6be
font_01_sfnt_off00007a37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A37 1796 bytes
SHA-256: f49c2d8ea9b1858a2121eafee3cf25bc9cd6b45ab42ebdb440775674c646cb3d
font_02_sfnt_off0000830b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x830B 11956 bytes
SHA-256: 77820f7121eee19d6e6cd133fb8944d346d0b8a6845ab65eb308d98910b94c59
font_03_sfnt_off0000ac1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC1D 16164 bytes
SHA-256: 3afbc95f4a2677bf4c8b77bd7df62e4dbeb651db4b5e482cf97b58e472170d58
font_04_sfnt_off0000c116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC116 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f