Malicious PDF — malware analysis report

Static analysis result for SHA-256 75e8c40c64b06e8a…

MALICIOUS

PDF

79.4 KB Created: 2021-03-15 02:04:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 17b0890cc4f3b992dba4b5993335d2a3 SHA-1: aeaadd3d72ad513cf5034dc8acf0c2aab8596d15 SHA-256: 75e8c40c64b06e8ad5b15c8a08df9a2e5748d4d28e218fcb1f4acb908e3cf5c7
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://xezojetit.ru/strik?utm_term=the+natural+movie+music PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4444115/normal_5fee0e1b3bac8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372963/normal_5fff609fbd103.pdfIn PDF document text
    • http://datingsexchat.site/45898384961ewbrv.pdfIn PDF document text
    • https://miremawa.weebly.com/uploads/1/3/4/6/134631892/runobinidugowuzagib.pdfIn PDF document text
    • https://migobagola.weebly.com/uploads/1/3/4/8/134874333/3786104.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383566/normal_5feaf3541b4aa.pdfIn PDF document text
    • http://maturibcgj.space/ziwikoruwunom8bl4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453528/normal_5ffe133fd84b4.pdfIn PDF document text
    • https://ponegibafuzixi.weebly.com/uploads/1/3/1/4/131406662/nosezitipibasajexa.pdfIn PDF document text
    • http://umniashka.ru/bihar_map_hd9k5vk.pdfIn PDF document text
    • http://siankaanmexico.com/bandicam_crack_version_freesnwi5.pdfIn PDF document text
    • http://buwovavozu.getenjoyment.net/coleman_powermate_10_hp_generator_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366661/normal_600d884ac9b8a.pdfIn PDF document text
    • https://wodokapiv.weebly.com/uploads/1/3/4/5/134584818/wufejazo.pdfIn PDF document text
    • http://sixesijilolun.mywebcommunity.org/84433807002.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/e5db5b29-6322-40c3-8490-4b628b740a14/qsc_rmx_2450a_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3120d94-b0cc-4673-ad41-16ef9b3e549e/29783655861.pdfIn PDF document text
    • https://4121a797-204a-431c-92a8-8e24072fb342.filesusr.com/ugd/b972d5_f42f95e253304deebdd2572a15bb17d4.pdf?index=trueIn PDF document text
    • https://f9fc249e-2e6a-4908-9eb0-88005465a50d.filesusr.com/ugd/2530ee_8367ba746e1f44cfb75c0e7d9e841536.pdf?index=trueIn PDF document text
    • http://tudixuzaw.onlinewebshop.net/penedi.pdfIn PDF document text
    • https://981168d4-05fc-44b6-871d-73371d7e8cf1.filesusr.com/ugd/87d215_5824de9aeb684f15894e9e009c77abe8.pdf?index=trueIn PDF document text
    • https://f0198b83-f3fe-41b4-8315-bacd7eabb238.filesusr.com/ugd/2b3f46_152ce505f8144e628d272a7e05f95f0b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f96c7172-02e3-408a-a902-24294b9f18b4/it_would_be_a_great_pleasure_synonym.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_off0000f70e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF70E 5048 bytes
SHA-256: e59460151b6473b776396643509a6baa41ea13c448813f67f3881cb8e22c40a3
font_01_sfnt_off00010813.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10813 11848 bytes
SHA-256: 884ec9b830df212a23888c6f59c0be18130241ce1244a2b86d88de398f7d3754

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