Malicious PDF — malware analysis report

Static analysis result for SHA-256 0705b1e51b80030d…

MALICIOUS

PDF

47.8 KB Created: 2020-10-16 19:50:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ccaac54d7db49b57c256175790bb9f93 SHA-1: 0f4bb500e7426f76601f8d0e888835c368065d51 SHA-256: 0705b1e51b80030d8d9eff118e63033b08b9f289b91d25e39493a7b9539c418b
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://ggtraff.ru/123?keyword=prestashop+module+development+fabien+serny+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4372735/normal_5f893a7fc5637.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368227/normal_5f88b9102e4e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366397/normal_5f87cc9077c05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365563/normal_5f8754ef03d0a.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/katozuliwamu.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/8742796.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/3731638.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/9653445.pdfIn PDF document text
    • https://jonukejunuxesa.weebly.com/uploads/1/3/1/4/131409236/9c269551044.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368996/normal_5f8984049a392.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366632/normal_5f871c5129e60.pdfIn 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/1/0493/1279/2735/files/providence_school_department_news.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/9375/7603/files/examples_of_citations_in_powerpoint_presentations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/9743/8405/files/novaks_gynecology_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4660/8282/files/iron_man_tabs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8050/6773/files/xuxowalakopufavaterovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8331/7926/files/4867433934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/5759/7595/files/coleman_electric_cooler_not_working.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5544/8213/files/refrigerator_compressor_hot_and_not_cooling.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5459/0880/files/sidasakuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7162/6659/files/saguaro_high_school_football_recruits.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1068/1763/files/browser_hijacker_removal_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1746/2182/files/phyzspringboard_newtons_third_law_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/1509/4439/files/98274694116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6861/1989/files/88617010634.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_off00007b9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B9C 5584 bytes
SHA-256: db3e9c178ed2ff688aad28a06ad1bef7cade7d8ce459296ae3009ea8c3240f6d
font_01_sfnt_off00008e78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E78 10048 bytes
SHA-256: 8d2f13bd67ed8b053cf399e980d69188b1dc2d563795ec378edf8e4d27ce3f1f