Malicious PDF — malware analysis report

Static analysis result for SHA-256 9464f11fa39cddc4…

MALICIOUS

PDF

44.2 KB Created: 2020-10-28 03:10:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 05c420a8ef1e69de1e821c7c7a29bc5a SHA-1: da0292434f08d9ee0d62fca5069a6ca140e9b02a SHA-256: 9464f11fa39cddc4746b418d1f5a56cf4201cf6bb90e33918bde376a75f14bec
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://ttraff.link/pify?keyword=bluedio+turbine+t2+manual+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374021/normal_5f94604400a06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367624/normal_5f892593a3488.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371246/normal_5f8fb8ce145b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371265/normal_5f989ea45a23f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366027/normal_5f8d9e818740e.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005ef6.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005ef6.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off000095c6.bin)
    • https://cdn.shopify.com/s/files/1/0499/2463/6823/files/97554371194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1829/5709/files/kejuni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/0449/4500/files/83243426052.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/4470516.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/toladiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef67a5a5-2d77-4e11-8a7f-6c9fb5c6fc74/roxoxuzefojipadujerogo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70f0624f-687c-47e3-ac74-95e5161ba6aa/pazuxetudirilejurirobewed.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/62430000271.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/24884472715.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/twilight_graphic_novel_volume_1_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/banquet_manager_job_description.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/cumulative_frequency_graph_worksheet.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_off00005ef6.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF6 5212 bytes
SHA-256: 4ae0e4f17cdfbfaafa82e9057e2f3a589137fe36af80fe4dd06b843d7a78d643
font_01_sfnt_off0000708a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x708A 10972 bytes
SHA-256: bac5d5f0930cb40103de53e0d039eb64a2ef90f955ae36b9d83698e5afd1abc4
font_02_sfnt_off000095c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95C6 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f