Malicious PDF — malware analysis report

Static analysis result for SHA-256 464413689a955c7a…

MALICIOUS

PDF

64.8 KB Created: 2020-10-06 08:41:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 5aead0d2cedca154146fc282a231cecf SHA-1: f5a3529662f5ae4fda3bef7bd0ee1b5062c745a2 SHA-256: 464413689a955c7acc8727f4a0ec49255fdf42ea214f741eb4b1932e89bd488b
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=personal+information+protection+act+taiwan+pdf In PDF document text
    • http://files.ftrs.ca/uploads/1/3/1/4/131437194/tijugimotewifemuviwi.pdfIn PDF document text
    • http://vuleruloz.ipoopedinthewoods.com/uploads/1/3/1/3/131398452/dasenodinuna.pdfIn PDF document text
    • https://site-1039752.mozfiles.com/files/1039752/27539560831.pdfIn PDF document text
    • https://site-1037082.mozfiles.com/files/1037082/gadenupilemevorari.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off0000be17.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off0000be17.bin)
    • https://cdn.shopify.com/s/files/1/0431/5335/8999/files/how_many_cups_is_4_quarts_of_popped_popcorn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/3855/8376/files/39659397392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0929/7560/files/minecraft_bane_of_arthropods_or_smite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8348/8160/files/football_team_in_royal_oak_michigan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/9516/7654/files/sevoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2310/4160/files/eve_online_multiboxing_software.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_01_sfnt_off0000be17.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a74e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA74E 6764 bytes
SHA-256: 0e6cf69dcffaeb73f7cf61038e243f5117e18d9e640a6b0167e73afd0f8be851
font_01_sfnt_off0000be17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE17 5396 bytes
SHA-256: 823d9ddbd0de46a9f917b7a5319c7b0a56d4e824d4542630b60fb942714e8429
font_02_sfnt_off0000d06b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD06B 10376 bytes
SHA-256: 72b012f55463be80d8c04ef653541821592bd3517aacf5e898e213c27ba66706