Malicious PDF — malware analysis report

Static analysis result for SHA-256 5323ae75b4b6c0fa…

MALICIOUS

PDF

73.2 KB Created: 2021-03-10 01:34:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6621400dd8b06d627f84ac8daef20043 SHA-1: 5afd61fb15828cf27f1588e68df29a6139ace390 SHA-256: 5323ae75b4b6c0faf75b7e4cb3a4083d925940af4621b4490d322ec731306022
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://xajibur.ru/award?keyword=current+sda+church+manual+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4500670/normal_5fd0a0d257e6a.pdfIn PDF document text
    • http://zozomerolam.22web.org/destination_b1_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468268/normal_600efaaa896b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373502/normal_602525b894069.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469374/normal_603571f6c3ffa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385880/normal_60020951929a8.pdfIn PDF document text
    • http://geretogojo.22web.org/how_to_book_b1_test_for_citizenship.pdfIn PDF document text
    • http://dalidusiz.mywebcommunity.org/alto_sax_christmas_songs.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/3eda772b-710f-49c4-b689-b4c1136c8e86/47696314391.pdfIn PDF document text
    • http://xolavozezimodan.onlinewebshop.net/what_kind_of_government_did_the_soviet_union_have.pdfIn PDF document text
    • https://40ba1f7a-6e91-49bb-bbb8-dfbb40a2bc60.filesusr.com/ugd/22bf55_52691a1d4da74007baa71f74da081dfc.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ce71f77-2e06-4b5d-8987-b2a079a245db/how_to_make_whole_rainbow_trout.pdfIn PDF document text
    • https://6ba8113a-99dc-4618-97bf-d7180f10ff72.filesusr.com/ugd/b6edda_55c469648cb44d47b614a562ce286669.pdf?index=trueIn PDF document text
    • https://c2bc7a71-cb21-434c-84f6-8d2fc09ed56d.filesusr.com/ugd/03ae60_5e7717aaff704e018fa57037cf78728d.pdf?index=trueIn PDF document text
    • https://27f1a270-5048-4778-87f0-574dfe85248a.filesusr.com/ugd/b7306e_5c9ba0aabbdf440ab053f7d62668aa56.pdf?index=trueIn 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_off0000e37b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE37B 5300 bytes
SHA-256: 02a9e1711805cd6794a91c84c2a577c01b6ddce908daa7a5c92b1fce27e45bb2
font_01_sfnt_off0000f551.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF551 10196 bytes
SHA-256: 73472a2b807b271a582de4080a4da580842c56f3b919e4415d06e8ea94979ea0

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