Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ff25414a2271792…

MALICIOUS

PDF

40.5 KB Created: 2020-10-16 07:04:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: cf3b47dabe77d9d912859e9783449431 SHA-1: f6ba41eecc0478574cbfea1113dcd23872621ac5 SHA-256: 6ff25414a227179246f1ac6a50f3c83040472a2bff7f73beb8b2a9f352ea6f32
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://ggtraff.ru/123?keyword=post+treatment+instructions+for+microneedling In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365659/normal_5f872a298d59e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365627/normal_5f8713df33178.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369316/normal_5f891007555f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370063/normal_5f88cd9db49e4.pdfIn PDF document text
    • https://site-1039886.mozfiles.com/files/1039886/zimovewutavezavusedemax.pdfIn PDF document text
    • https://site-1042785.mozfiles.com/files/1042785/gijonusuxat.pdfIn PDF document text
    • https://site-1040003.mozfiles.com/files/1040003/lozujibixabijesezenij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369168/normal_5f87fbf6c0efb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366044/normal_5f8764e56d046.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/918722b6-7ca0-4d1b-a15f-4ab056dfe821/pedudutagiwarot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4707d386-6da7-41d8-aef0-6bb5488edbb2/17764733171.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fbf5592-a259-4137-9a9e-7a7ddc1b2b94/81591393282.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0af139a8-22b6-45e0-b757-60588add8e23/99813584110.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f66e7e88-ce52-4516-b8dc-0e0d1411fdb9/fefidosuwadijureratojuna.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/701e5fc9-ebf3-400f-8c5a-94484b0347c2/gozaxupafotipekimotibu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fd50516-4164-4d28-8a0e-c85555f432b8/dagujijadozori.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f75a871d-68c5-4b3d-9ff1-d4f61412b82a/62584591429.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01f8909e-2c2c-4c76-912d-990705f0b873/finoreno.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77c6cf4a-bc77-4c73-b507-aa9b703d69f8/budenozonabuzepakezukoka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93c4aaa0-3644-4efd-aa71-1cbeed360cdd/xizudojirevatapaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79c4e6dd-3490-4036-b1e5-cfcc27fa8728/99268476923.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bc85a53-be5f-4bbd-a8be-01566435bea9/pafuxabupu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a9418a3-ffc4-4705-b628-efe92afa80d8/kewajomezugojitana.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_off00005fab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAB 5340 bytes
SHA-256: 8896cb9f38ae0514d18f2e050ce1b8fac3740d707b5b2a47b6c58e87262de13a
font_01_sfnt_off000071bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71BB 10360 bytes
SHA-256: 73fb1c478f94ebd63cb5a0f36414ff1a8d7825ec98adb92cd997db76c51b6e2c

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