Malicious PDF — malware analysis report

Static analysis result for SHA-256 1471adcd217da97c…

MALICIOUS

PDF

71.3 KB Created: 2021-03-21 22:49:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a7f8cadcd2d9dfeb21761f2ca5e250cd SHA-1: 2c5ef19df1b2bc703696980e549c2191622329f0 SHA-256: 1471adcd217da97cc766c833d8c3f828f300b95ceea4f25ea6896eed894f58b3
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 0.9960

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://golowaki.ru/strik?utm_term=what+does+the+coffee+grim+offers+max+symbolize+what+does+it+stand+for PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408001/normal_6043bba9badc4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490961/normal_6037ec320bad2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408706/normal_6018682899610.pdfIn PDF document text
    • http://sunny-web.ru/99206687949oaup8.pdfIn PDF document text
    • https://cdn.sqhk.co/tosolizidovi/gjz7hfZ/31286336348.pdfIn PDF document text
    • http://yewes.space/bufudurozosigijowl42r.pdfIn PDF document text
    • https://cdn.sqhk.co/vozevadijut/c7Uhhih/comprehensive_survival_guides.pdfIn PDF document text
    • http://wiinorama.website/solution_manual_fundamentals_of_momentum_heat_and_mass_transfer_6th_editionf287g.pdfIn PDF document text
    • http://bosnoslovnoejelaniekupit.xyz/how_to_put_my_wahl_hair_clippers_back_togethersotq2.pdfIn PDF document text
    • https://cdn.sqhk.co/pimupigedu/4CjgUid/apply_critical_thinking_skills_definition.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463824/normal_6050e9ceba5bf.pdfIn PDF document text
    • https://cdn.sqhk.co/kubepugemaki/ijdZYjf/wejigamixafavopaboxis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423189/normal_605670a71a497.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/5b6c65d3-7f33-4ddf-8bd2-f38c9f347265/kejajadatosonuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1974aee1-c7b0-4513-a2d0-df68d87d7a21/nujilinoraralinuwolabego.pdfIn PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/wugafago.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/91872758299.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/25057602159.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2eeaca37-ebbf-4bcf-b4eb-1ed7ff9feca7/21770993466.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/3367981629.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08d646e9-5d3a-4dad-abb7-2d20e84ad998/padefekokeved.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/pogivilavokemimezadifida.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/how_to_update_kindle_fire_hdx_3rd_generation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85ee07c1-ce29-40b5-a475-46c17e068daa/44568962678.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/sostanze_aeriforme_sinonimo.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/10580906964.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_off0000d5ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5BA 5900 bytes
SHA-256: 61386df5f112f3b0891d18561a3645e7363f1a09db88ac8097f05a3d2b426329
font_01_sfnt_off0000e9d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D7 10988 bytes
SHA-256: 6c0a066bb2cd114c3495d888d8193ae18fbac61ac0fee10a3ba96aa898436d26

Open this report in the interactive analyzer, or submit your own file for analysis.