Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6379997f180eca8…

MALICIOUS

PDF

42.0 KB Created: 2020-10-03 08:50:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 83e9e32524e304ccd196ae0937065781 SHA-1: f81565a962166de021cc341cf1602a8408b86119 SHA-256: d6379997f180eca89fd838c13e18cda82188765fa6a48400bef7da4a5c9a073e
124 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.
  • 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.
  • 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://cctraff.ru/strik?keyword=alex+ferguson+my+autobiography+download In PDF document text
    • http://tilob.christianchurchinpennsylvania.com/uploads/1/3/1/3/131383330/xijob.pdfIn PDF document text
    • http://files.ukassignments.net/uploads/1/3/1/3/131379420/guvozuletazimixexun.pdfIn PDF document text
    • http://files.hamrehillappaloosas.com/uploads/1/3/0/7/130739290/vaguf.pdfIn PDF document text
    • http://mabixug.entotofoundation.org/uploads/1/3/2/6/132681824/6328047.pdfIn PDF document text
    • https://site-1036675.mozfiles.com/files/1036675/43225251787.pdfIn PDF document text
    • https://site-1036907.mozfiles.com/files/1036907/53870590615.pdfIn PDF document text
    • https://site-1039998.mozfiles.com/files/1039998/zefirejipufuzelumajobuvi.pdfIn PDF document text
    • https://site-1037878.mozfiles.com/files/1037878/11686957544.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://cdn.shopify.com/s/files/1/0498/5549/6347/files/order_and_chaos_online_quest_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9843/4461/files/coleman_22x52_pool_cover.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6653/0721/files/wow_classic_prot_warrior_leveling_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6912a0cc-e81b-4c0b-8ad6-b047eaf4edbf/dusajoro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5252fb0a-5f6f-42a1-8571-a4019ddbbecb/jufesumi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/660a1915-8556-4060-a5d0-9ac0b4a412ee/6217519136.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3118adc7-ff67-4053-8eef-bb39e97da505/16789848887.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c087721e-f91b-457a-9f25-9efdc7bc5ff0/mugukomomefoverafogu.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_off0000563d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x563D 5728 bytes
SHA-256: c7489ab52f00575a87b9dddcf422742d396d8ef71854021c8bf18d02f6ab9bae
font_01_sfnt_off0000699f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x699F 10328 bytes
SHA-256: 438328a251303eeb267c21cf10f00b25e86c980037f88712a94aa57a2593052a
font_02_sfnt_off00008cdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CDC 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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