Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e64136d6794b05d…

MALICIOUS

PDF

40.9 KB Created: 2020-10-04 23:02:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 54510a5571bbbdb648d9049194f9ce46 SHA-1: 5211c38dfc6ff410e27b5dfed3cc44c3174617f6 SHA-256: 9e64136d6794b05d20bbd81a1a6463d0fa6e7c42336d0937ec3f38b73df3d65b
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://cctraff.ru/strik?keyword=house+of+fun+hack+tool+free+download In PDF document text
    • http://files.olivetteinbloom.org/uploads/1/3/0/8/130873708/8fef9a769c.pdfIn PDF document text
    • http://files.stanthonygardenplain.com/uploads/1/3/2/7/132740990/3032664.pdfIn PDF document text
    • http://files.lucindagrange.com/uploads/1/3/1/4/131437491/tatevivove.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/5f244137-1311-44b3-a10c-6167b1a50271/49532040727.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cc42cc0-f463-43b5-ac0a-262ef6997202/bijukuzixusidesotasutu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5470747a-5e54-4d6e-88df-5227a97d09de/kotakola.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be6b088e-f133-4ecf-b733-60b2fa5aeb1a/zuzagutisopaxuzulitawom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5e312bb-2a92-46b2-a758-4a12e75c6497/migoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/9644/2527/files/rosario_vampire_manga_season_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4891/8426/files/wolf_puppies_for_sale_in_california.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_off000062cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62CC 5228 bytes
SHA-256: a4f2e1660bcbeee5828068eb957f2bf01a5714c9bdbfed122fd9baa722f11435
font_01_sfnt_off0000749e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x749E 10088 bytes
SHA-256: ce3916718cefbeca3fac82ca2e2d7aa89c93e4ea74b9584774c3beed94495366