Malicious PDF — malware analysis report

Static analysis result for SHA-256 2927900cd6f3094b…

MALICIOUS

PDF

83.1 KB Created: 2021-03-10 04:05:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 313936eb192443edbc59f282b236bcc6 SHA-1: b42a08eb2f350f1dea15de55a7376b1b2b729c8e SHA-256: 2927900cd6f3094b50c429298d523dd1755e6dae237e3db4f6ed52438308bbfe
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains embedded URLs and is flagged by multiple heuristics, including a critical ClamAV detection for Pdf.Phishing.Trojan. The document body, though partially corrupted, contains a link that directs users to a suspicious domain, likely for phishing or malware distribution. No scripts were extracted, but the presence of numerous external URIs suggests a phishing or link-farming attempt.

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://golowaki.ru/wix?keyword=a+daughter%2527s+prayer+for+her+dying+mother PDF link annotation
    • https://cdn.sqhk.co/fosapuzisas/jhieLo6/bekeragalowe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412584/normal_6003c304ea490.pdfIn PDF document text
    • http://kakolamilasaru.medianewsonline.com/carbapenemicos_2020.pdfIn PDF document text
    • http://lagidonak.mygamesonline.org/31708881996.pdfIn PDF document text
    • http://xutexukoxobofi.mywebcommunity.org/ziwuvogonasazejaziwofa.pdfIn PDF document text
    • http://serururepus.scienceontheweb.net/como_se_cita_un_autor_corporativo_apa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384323/normal_5ffcbe6b1d645.pdfIn PDF document text
    • https://cdn.sqhk.co/xugosovemi/dRp67gh/board_games_online_with_friends_for_free.pdfIn PDF document text
    • http://jigikujed.scienceontheweb.net/hoover_power_scrub_carpet_cleaner_w_spinscrub_technology_fh50135_how_to_use.pdfIn PDF document text
    • http://ninuwekevap.scienceontheweb.net/gatugusodabit.pdfIn PDF document text
    • http://xepelewatelaziv.getenjoyment.net/assistant_loco_pilot_notification.pdfIn PDF document text
    • https://cdn.sqhk.co/golemejexeno/eobkuLt/rust_append_to_string.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/igjjige/spirit_airlines_stock_today.pdfIn PDF document text
    • https://vivimudovulab.weebly.com/uploads/1/3/1/4/131437737/5901873.pdfIn PDF document text
    • https://fixubosadad.weebly.com/uploads/1/3/4/6/134658154/lokiroduzuwinopo.pdfIn PDF document text
    • https://cdn.sqhk.co/dedesonor/uhe4jH8/zombicide_2nd_edition.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://fafinonez.rf.gd/fubebunadelanorojof.pdfIn PDF document text
    • http://fenozenexow.epizy.com/malunotobibibog.pdfIn PDF document text
    • http://zazupixuwup.rf.gd/kesalixuzalonaf.pdfIn PDF document text
    • http://kewumexor.epizy.com/creating_a_fillable_form_template_in_word.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_off0000fa1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA1F 5432 bytes
SHA-256: c8dcfe9085f370e48653ed46ce5e9c72f811269a8e65809188d3ba65553bcb2c
font_01_sfnt_off00010c7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C7B 10632 bytes
SHA-256: 004ec6623b8e11e69289867d745a422a935c43893cafef7342c421bd251055c7
font_02_sfnt_off000130d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130D9 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333