Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6fdbc17238a81a7…

MALICIOUS

PDF

71.0 KB Created: 2021-03-10 12:43:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8d7df4357f0c61ff3c1e7e2a506b5c7d SHA-1: 5c91a5bb37c8c54b628401f8da6ac4fc2840973b SHA-256: b6fdbc17238a81a7ddab4941c42b71f570a8c00016287d099815cdf9c4accf79
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://kuzutuzo.ru/award?keyword=compendium+of+emerald+tablets+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4379744/normal_5ff93588afe97.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450898/normal_5fc8eba7d2c70.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470967/normal_5fe27a25302c6.pdfIn PDF document text
    • http://vodabutopidaru.getenjoyment.net/what_kind_of_character_is_the_nurse_in_romeo_and_juliet.pdfIn PDF document text
    • http://nomenowunesazoz.scienceontheweb.net/gebonofokejopefawo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447436/normal_60346e57f16c6.pdfIn PDF document text
    • http://tekijanimawov.22web.org/inferno_dante_book_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421048/normal_602283d7abdfa.pdfIn PDF document text
    • http://kopawaruda.22web.org/77810800247.pdfIn PDF document text
    • http://winovigamaj.mygamesonline.org/xopixepozigenupaf.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/e4391f9f-2f22-490b-862d-3318ad6a0c17/29950892344.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46d2fe15-ee8f-418f-a068-693e173d1e2d/daleluxefone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8265cc8f-0b8e-46f3-98af-ac28d50e7aca/starfinder_free_rules.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/617a5853-04d9-4c04-bef1-85cdfd71af1a/komuxedirokafesab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab8a52db-1e7f-493d-9747-26a517496d2e/73397446817.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8ea1963-6b31-4a46-ac51-4948ebb7729c/wills_eye_manual_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14b22461-4132-475a-844e-bdd37d9e4ed4/90093596696.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6225b434-a441-4d15-9f00-f49ef2a0525a/game_show_channel_the_chase.pdfIn PDF document text
    • http://pobopujobezov.rf.gd/archetype_examples.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_off0000d975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD975 5232 bytes
SHA-256: 048cd432e9423abcbdaa5a7dcaed11764eb377070edf009bea123f0c74a52d0d
font_01_sfnt_off0000eb1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB1E 10448 bytes
SHA-256: 2beda96182404d4c7d96728c3de5537b0e26aba38bad38bac0a3a33f1674ef27

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