Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd546bad0082f0aa…

MALICIOUS

PDF

54.5 KB Created: 2020-10-10 23:33:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 483ae561e838074486fc553d379c92d3 SHA-1: b25dc3b342801de633ebb6ab22d88a8d6e0b0362 SHA-256: fd546bad0082f0aa0f3b73b439c125f8bbf851ba980146ae0665ce62e920e84c
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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=renault+megane+owner+manual In PDF document text
    • https://site-1040317.mozfiles.com/files/1040317/11285325412.pdfIn PDF document text
    • https://site-1044106.mozfiles.com/files/1044106/nikepobaxifopa.pdfIn PDF document text
    • https://site-1041693.mozfiles.com/files/1041693/sewuzafupokefimem.pdfIn PDF document text
    • https://site-1040129.mozfiles.com/files/1040129/6114027371.pdfIn PDF document text
    • http://files.dearborn411.com/uploads/1/3/2/7/132740860/xokagilo.pdfIn PDF document text
    • http://files.msmspe.com/uploads/1/3/0/7/130775002/4573890.pdfIn PDF document text
    • http://files.threadstoinspire.com/uploads/1/3/0/7/130775980/faronijodegow_mopobufate_gadojegubikav.pdfIn PDF document text
    • http://rejutepaf.ubemresidency.com/uploads/1/3/1/3/131383264/xixitarujegepuvukevo.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://uploads.strikinglycdn.com/files/b645290c-4117-451b-aa5d-df49d4bf2ed7/51271704810.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6abfa3a-83fe-4ec2-b1e4-b48fa3e940e5/8991280127.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3429e2db-3e99-4e26-885e-803b1245198b/newitowebizogagulag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7397/8011/files/18562902353.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/5013/0331/files/cydia_impactor_wont_recognize_iphone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9880/9518/files/90608844526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0238/2504/files/allison_transmission_codes_p0897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/1428/3176/files/notuxenudikabox.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71B4 4760 bytes
SHA-256: 938b9d474e5310c0bd90cd827842435163c2d2216042f55b379bd9e6e2d1dc51
font_01_sfnt_off000081db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81DB 12488 bytes
SHA-256: 0f5fc2b072e8eab8ee4c3eb07234f1ddf39986b36621ad2c1756c3decd6eb35c
font_02_sfnt_off0000a8dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8DD 16164 bytes
SHA-256: 0250545ef5ea7c232323ba9cd73ff257c0f47b778ea4156b5c9e23dddeb59f7a
font_03_sfnt_off0000be02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE02 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361