Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd27f8648b43ad26…

MALICIOUS

PDF

44.7 KB Created: 2020-11-02 23:11:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 13ed5c45d64dcb88f388853ce8d8648d SHA-1: c4664f3830139fa2aae91633f006d2f044ddc764 SHA-256: cd27f8648b43ad268271b97a7363774eb16ae8693a5f8cf908d197adff7c3499
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://ttraff.me/123?keyword=realistic+physics+mod+minecraft+1.12.2 In PDF document text
    • https://gasipepimajut.weebly.com/uploads/1/3/4/3/134367512/2406329.pdfIn PDF document text
    • https://wofirifitobad.weebly.com/uploads/1/3/4/3/134310136/3448280.pdfIn PDF document text
    • https://vasabofilusav.weebly.com/uploads/1/3/4/5/134585229/317c2858eab701c.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/9857981.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4612/6247/files/tema_android_one_miui_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cf38cb2-8c98-41bc-b6b4-77bd7684e7dc/pulp_fiction_pelicula_espaC3B1ol_latino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/6914/3708/files/13262693963.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2250/8454/files/66436631500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/9241/6946/files/scotsman_ice_machine_dce33pa_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/9752/5912/files/54491517839.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/map_of_paris_arrondissements.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5225f88a-8f9a-4f6f-bc32-5d8c486a4302/felagixunepixewuwaroko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/175278a9-ed57-4bc4-89e8-9a192f24987b/gewipizexilisuwubida.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006201.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6201 2900 bytes
SHA-256: 10a07fc969e6c8cf41398fcfefa625e426b29a45b33f3716d0886db1405c0d2a
font_01_sfnt_off00006c44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C44 5720 bytes
SHA-256: 0cda827f0367b0ee3657cda33867f2f2f43708b50745c42759e07b215a9b04d0
font_02_sfnt_off00007f9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F9C 10972 bytes
SHA-256: ca5ba7e92d865e3aed23f1fa555495a670f41df4c9ba56927b4b99b2091d8ee0

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