Malicious PDF — malware analysis report

Static analysis result for SHA-256 89a88a54664f8bec…

MALICIOUS

PDF

52.4 KB Created: 2020-11-07 11:19:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 5dfdce35f5222971e8e8be6eb8e76ad4 SHA-1: c8ec71e1b98616db13ae6491de42aca0e43c7f3e SHA-256: 89a88a54664f8bec7bd56b97a95ad279c6da4f6ec44e64f7e7104960d72c1324
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://traffset.ru/123?keyword=chemistry+chapter+10+review+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4390641/normal_5f90834266929.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367950/normal_5f8f7820ebf12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373782/normal_5f99289c72ba0.pdfIn PDF document text
    • https://vevinobe.weebly.com/uploads/1/3/4/4/134487659/palidat-tozopereji-detubatizux-sulojuzoser.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369519/normal_5f881529af61b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380707/normal_5f8b7a0b23e09.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://duxagigeva.files.wordpress.com/2020/11/zebemenadi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f9624c3-f807-4f16-bb54-363315256c95/lubalarunoxekupo.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/lactogenesis_humana.pdfIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/yalla_shoot_koora_live.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bed9f12e-c618-4729-83ef-70f4d8abee22/hawaiian_pineapple_wine_maui.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b631661d-8a36-4808-a476-0e367c31b2ff/lopodisobapopi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab046884-89a3-4673-916c-b8fc01fcb90c/3941771327.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/experian_credit_score.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_off0000687d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x687D 5288 bytes
SHA-256: ba59a6a395058b07cf52a91b336640c145302efe301ca344cb9d621fce1c7a41
font_01_sfnt_off00007a67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A67 11340 bytes
SHA-256: bee49a25fc03f6513c07fa6a6cf4b42cf6689c002e117e9d98c18e7cee239f90
font_02_sfnt_off0000a12e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA12E 16084 bytes
SHA-256: 192e1cf8743c95d644f41697cb32af4f2bd92b7888e96aef7f61385a8dcfe722
font_03_sfnt_off0000b5d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5D9 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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