Malicious PDF — malware analysis report

Static analysis result for SHA-256 300618ed1c580dfa…

MALICIOUS

PDF

59.0 KB Created: 2020-10-05 13:43:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e9bf46aefe2739aaf872d4f8eaf492fe SHA-1: df3e792d805a00e911cc6ffa5d6e057a27264b85 SHA-256: 300618ed1c580dfa35bddd6ac61bdd095f4994f2ccd32eab7c334346e167a8ca
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=%25D1%2582%25D0%25B5%25D0%25BC%25D0%25BF%25D0%25B5%25D1%2580%25D0%25B0%25D1%2582%25D1%2583%25D1%2580%25D0%25BD%25D1%258B%25D0%25B9+%25D0%25BB%25D0%25B8%25D1%2581%25D1%2582+%25D0%25BE%25D0%25B1%25D1%2580%25D0%25B0%25D0%25B7%25D0%25B5%25D1%2586+%25D0%25B7%25D0%25B0%25D0%25BF%25D0%25BE%25D0%25BB%25D0%25BD%25D0%25B5%25D0%25BD%25D0%25BD In PDF document text
    • https://site-1036754.mozfiles.com/files/1036754/worikobuluveselatonurikam.pdfIn PDF document text
    • https://site-1048288.mozfiles.com/files/1048288/88391562789.pdfIn PDF document text
    • https://site-1036900.mozfiles.com/files/1036900/56238741957.pdfIn PDF document text
    • https://site-1037141.mozfiles.com/files/1037141/kinokedoronibu.pdfIn PDF document text
    • https://site-1037241.mozfiles.com/files/1037241/99018915733.pdfIn PDF document text
    • https://site-1039428.mozfiles.com/files/1039428/zijekizonoxa.pdfIn PDF document text
    • https://site-1039929.mozfiles.com/files/1039929/sidaxazubetivam.pdfIn PDF document text
    • http://vikeg.givete.org/uploads/1/3/0/7/130739919/8964014.pdfIn PDF document text
    • http://files.peterclarkmd.com/uploads/1/3/2/6/132695401/1740700.pdfIn PDF document text
    • http://gudeje.marielouiseantoni.com/uploads/1/3/2/7/132740204/9a7c2d0bfe.pdfIn PDF document text
    • http://dexavun.stlawrencevbs.com/uploads/1/3/1/4/131407045/mozafavugudaxidizu.pdfIn PDF document text
    • https://cctraff.ru/strik?keyword=%25D1%2582%25D0%25B5%25D0%25BC%25D0%25BF%25D0%25B5%25D1%2580%25D0%25B0%25D1%2582%25D1%2583%25D1%2580%25D0%25BD%25D1%258B%25D0%25B9+%25D0%25BB%25D0%25B8%25D1%2581%25D1%2582+%25D0%25BE%25D0%25B1%25D1%2580%25D0%25B0%25D0%25B7%25D0%25B5%25D1%2586+%25D0%25B7%25D0%25B0%25DIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/6545/2965/files/matlab_figure_title_color.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0041/9736/files/quiet_partner_ii_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0475/8772/1372/files/91363436347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4618/2305/files/73490035566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/1650/6520/files/rijubiwujirojidavizuvam.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_off00005a6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A6C 11884 bytes
SHA-256: 3924239b2021784e18a7cab807752e424860ecba02156e45a29c66de04185904
font_01_sfnt_off000081f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81F9 5928 bytes
SHA-256: 22c1c719f43b1128ff9db61c5fe58886213f94ff03dc590919d6ec7de5308875
font_02_sfnt_off00009596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9596 15480 bytes
SHA-256: e5c73a3e46abfc74e31a6efa0676e5777fadea78511d145b7603abe39b6f9aa7
font_03_sfnt_off0000c5ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5EE 16160 bytes
SHA-256: 31f54bf1b2a0bd5fcefce680aa7bc0ab7b2c48a0f9a6877104dd616c0c0a5462

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