Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad5ddfe54c3bed62…

MALICIOUS

PDF

46.1 KB Created: 2020-11-06 09:17:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 860de155b69b0c566a71a891cd8aa2eb SHA-1: 27ce16981eea983a3ab45c1ef695292e15da3813 SHA-256: ad5ddfe54c3bed62f9612cb298809d16872d031e6298aaa6b133d62c803b0b62
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/123?keyword=when+are+adjacent+angles+congruent PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369664/normal_5f9a0ffc729f1.pdfIn PDF document text
    • https://ziwojezevuvige.weebly.com/uploads/1/3/4/5/134500989/3600027.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366375/normal_5f8beb95524b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402953/normal_5f9ffe87ae494.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420235/normal_5f9b34eb9a3d6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/nuts_and_bolts_types.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/another_brick_in_the_wall_part_2_guitar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c86c3a5b-76d3-408d-818e-0a0e3981d1ef/confessions_of_a_public_speaker.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/frise_chronologique_mouvements_artistiques_peinture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/5466/4342/files/english_in_asl_sign.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/nudexilowila.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/atlas_copco_zt22_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/2167/9771/files/how_to_chat_in_google_docs.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F9D 5288 bytes
SHA-256: 50f98259071c565876e5e760e62a0596c4205465079c98284e1eaa8a2cd4135d
font_01_sfnt_off000061a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A0 3232 bytes
SHA-256: 0b24ca95beeda91e956c40c50df672f8e397957b1db6f48f054cfb4affb2ebeb
font_02_sfnt_off00006eae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAE 10984 bytes
SHA-256: d23b22f44a5bcfbf27174e8c479fee0dd0f0ce16f6eea79523cb4c0ec917d07a
font_03_sfnt_off0000946c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x946C 16072 bytes
SHA-256: 4ce97752c8d1ed0b0302a1507788019c6b738cc3ee96ca273f61f92c287db7cd

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