Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6d477e2318818c7…

MALICIOUS

PDF

71.8 KB Created: 2020-10-25 20:43:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 484fc90025dff6cf9a03e459f61d58ff SHA-1: d4f2cca4492b3cf73f4b7ae753d56e2e77b7a5a7 SHA-256: f6d477e2318818c7514d150f19ef29ed31316dade27493ff8c5454f5a5c1064f
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=diagrama+de+fusibles+jetta+a4+en+espa%25C3%25B1ol In PDF document text
    • https://tevumusavobe.weebly.com/uploads/1/3/4/1/134108657/fopigoresuxe.pdfIn PDF document text
    • https://lesofetu.weebly.com/uploads/1/3/1/3/131378838/89650.pdfIn PDF document text
    • https://gibitiwatu.weebly.com/uploads/1/3/0/7/130776060/bab8c3.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/zidebesirolabavo.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/nimemoroligamaj-tafixidupara.pdfIn PDF document text
    • https://fufivivol.weebly.com/uploads/1/3/0/8/130873849/639e64ce.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/lodufoso.pdfIn PDF document text
    • https://fuparududewon.weebly.com/uploads/1/3/1/8/131856041/wadixosajukipa.pdfIn PDF document text
    • https://fupesovuzej.weebly.com/uploads/1/3/4/0/134016868/fiboragiwov.pdfIn PDF document text
    • https://gejatovuri.weebly.com/uploads/1/3/1/4/131406669/8ecf3225f90.pdfIn PDF document text
    • https://wipomozexabezi.weebly.com/uploads/1/3/0/7/130776841/wewisudate_xugej_garowulexaganu_piwuzu.pdfIn PDF document text
    • https://kuzaloxamuw.weebly.com/uploads/1/3/1/4/131406684/wawukujebitit.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000b72d.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000b72d.bin)
    • https://cdn.shopify.com/s/files/1/0504/5102/2001/files/common_gender_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3318/8762/files/describing_peoples_appearance_and_personality_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/8353/5781/files/bubasufasusojisorovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9918/4022/files/gw2_griffon_guide_reddit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2065/6033/files/jivogusabanijodavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1742/1479/files/bopil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/3259/1559/files/italy_national_food_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6035/3429/files/comprehension_worksheet_ks2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0143/2224/files/judalubotetanesanobugon.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 extracted file (font_00_sfnt_off0000b72d.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off0000f980.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off0000f980.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b72d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB72D 5876 bytes
SHA-256: 9e83f7ef64934549d62b3f5813fb2e4b990777c261f478a02d9877571e9db392
font_01_sfnt_off0000cadd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCADD 14228 bytes
SHA-256: 0ea6b8d3b6d8c49066c1bdd7ccf406f91556d0feb3c4fcb1dff15f58df7e6928
font_02_sfnt_off0000f980.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF980 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501