Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c1d794d3482e7e3…

MALICIOUS

PDF

42.1 KB Created: 2020-11-06 13:29:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 6874bd600c47c646b52e52784c6adad9 SHA-1: 08fd8d2e94717b7888d5c45727e4f4eaa59701b9 SHA-256: 7c1d794d3482e7e33347a31b4ff196a24d2c4536a77299a9bf88659c7dff3305
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://traffset.ru/aws?keyword=singer+treadle+sewing+machine+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4390371/normal_5f90fd9ff41a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381083/normal_5f8f26cd90d48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384318/normal_5f9ec9afe8077.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415929/normal_5f9ce2a3a0f1e.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/28d142aa-0f06-4589-bf85-bbec731d2f6f/popevigunilopipix.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/blender_tutorial_animation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bbbf72c-7080-431f-8137-e991520c85b7/kebudadekovo.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/plazma_burst_unblocked_77.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43fc2231-56a9-4f24-9e88-e4dd8b6244a0/gusexenafizolewaduxon.pdfIn PDF document text
    • https://s3.amazonaws.com/mufukep/billionaire_branding_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb16072a-b233-4ed3-9d55-82eec2a4ae9e/clash_of_clans_town_hall_5_base.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23f423ed-c6d3-4aa4-98a9-a377c5462268/johnsonite_rubber_wall_base_maintenance.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/adjusted_and_unadjusted_odds_ratio_in_spss.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/title_page_example_apa_6th_edition.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_off000065df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65DF 5548 bytes
SHA-256: c0f7782cb1c345202687028d271f4d0fc2fc2b741a247118914c37401e30aa1f
font_01_sfnt_off0000789e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x789E 10164 bytes
SHA-256: beeb491b9a37e14aa885b90236fc1f0041e02164a2527fb9329d9ea60fc28175