Malicious PDF — malware analysis report

Static analysis result for SHA-256 465ef8a93a0c8a50…

MALICIOUS

PDF

142.0 KB Created: 2021-04-18 06:02:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f14e4d8737bf02ab159768c35628c937 SHA-1: e6a9bf2a353a46a97cebb3dd1427bc59cad740c1 SHA-256: 465ef8a93a0c8a50afb40156ac0271b424701400e1443fddfe5dcad41caf3c94
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 0.9997

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/strik?utm_term=bolt+action+rifle+rust+labs PDF link annotation
    • https://ramowofotaro.weebly.com/uploads/1/3/1/6/131607053/nizimozezovaziwalowu.pdfIn PDF document text
    • http://oficialshoes.site/fubivomhq01p.pdfIn PDF document text
    • http://bcpzonasegur4viabcp.com/39252251088gytga.pdfIn PDF document text
    • http://sasegotib.medianewsonline.com/bach_prelude_in_c_major_guitar.pdfIn PDF document text
    • https://logifuvixejexa.weebly.com/uploads/1/3/6/0/136019385/1415267.pdfIn PDF document text
    • http://domainlimax.xyz/kisijadepomixaniforokepev8xek.pdfIn PDF document text
    • http://tonerinkstore.com/weather_report_hattian_bala_ajko49v8.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
    • http://jinagafudolugil.epizy.com/alter_ego_a1_hachette.pdfIn PDF document text
    • http://kepagewav.atwebpages.com/gonidabukeriredom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f34ca459-dfe8-4d4f-839d-f7d8b3821fae/zonubiraki.pdfIn PDF document text
    • http://popefididogake.epizy.com/15360757035.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23de5929-209a-4099-8c75-02d3a2381c9b/how_to_clean_a_wagner_airless_paint_sprayer.pdfIn PDF document text
    • http://tutivute.epizy.com/36431211500.pdfIn PDF document text
    • http://foripoj.epizy.com/meeting_attendance_sheet_excel_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b0779fb-cf63-406d-9193-0050ea43887c/16772967001.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da8bde82-24bf-4fc3-81cf-ae0691b280e9/sony_alpha_350_user_manual.pdfIn PDF document text
    • https://ca6b24e6-01cd-4368-a310-1df05077a315.filesusr.com/ugd/11b39a_891d45f4cea7446dae740747945e7d56.pdf?index=trueIn PDF document text
    • https://0443db59-9f9d-4031-b786-8a5723798135.filesusr.com/ugd/ab62d6_8f672b7b83a64b7e8ad19a40c03b8404.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001e6a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E6A1 4948 bytes
SHA-256: 2f3047b25d74d422f59f333f3e1cb8798ebccf273837bfe88dd4c7baa5416fbf
font_01_sfnt_off0001f77c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F77C 11112 bytes
SHA-256: ead59a2984e0bfffa297ac9b31638b2f1fca172ec273e6c1a018774e04fe3854
font_02_sfnt_off00021c5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21C5B 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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