Malicious PDF — malware analysis report

Static analysis result for SHA-256 f183b8c3f6d63e6e…

MALICIOUS

PDF

43.0 KB Created: 2020-11-08 07:06:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 04ff5a0ab0e25e778abe3de89e02417d SHA-1: 75b712de52178eeace626f5235fb2da995592743 SHA-256: f183b8c3f6d63e6e913463be563dab62bc093bed9bc4e85756db1b34c42fa898
96 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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://traffset.ru/aws?keyword=township+apk+download+for+pc PDF link annotation
    • https://rabidibizuzej.weebly.com/uploads/1/3/4/6/134648686/gimelap.pdfIn PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/8543469.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403415/normal_5f9be6254357d.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/bewomo.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/tadovu/80065663496.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/tally_accounting_ledger_list_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ba83841-b81d-4285-ac2c-684428af9e4d/24355765784.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/design_of_agricultural_machinery_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b8ae365-7bab-4601-bcfc-be078b415d93/pijopifufisuxumuxiz.pdfIn PDF document text
    • https://s3.amazonaws.com/fizufapu/fnaf_unblocked_games_77.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/artificial_intelligence_in_hospitals_and_medicine.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_off000068e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68E5 5348 bytes
SHA-256: eb248902e73fbc34baec277cf50b6e4c3697f514209ccf5e76fbf0ddb728073b
font_01_sfnt_off00007b21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B21 10456 bytes
SHA-256: dd8fcd388df8440f164cce141eb8c963d4ed44c348ecdd1a62f8daa257602832