Malicious PDF — malware analysis report

Static analysis result for SHA-256 56b79e6bfe7fc3bc…

MALICIOUS

PDF

88.7 KB Created: 2021-02-15 21:05:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 44e625b0110ff8ae5720b534fcd4e1ae SHA-1: 7083dfb36bbf4a8cc27343f860fd504f285403ea SHA-256: 56b79e6bfe7fc3bcf0679abce713ef7ac7adbaa63d1d7e0e7ae83000f2eed13d
224 Risk Score

Malware Insights

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

This PDF document employs an advance-fee scam lure, presenting itself as a notification related to a lottery, prize, or parcel delivery. It contains multiple embedded links, including one pointing to known malicious redirector infrastructure at 'https://crophysi.ru/strik?utm_term=how+to+make+a+case+study+in+social+work'. The document's structure and the presence of numerous links on disposable hosting suggest an attempt to direct users to malicious websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://crophysi.ru/strik?utm_term=how+to+make+a+case+study+in+social+work In PDF document text
    • http://magicwoolshop.com/77129990240r2tj0.pdfIn PDF document text
    • http://idem-peshkom.ru/691268379173k4a0.pdfIn PDF document text
    • https://cdn.sqhk.co/vukupamita/ijXigpT/nugujilipos.pdfIn PDF document text
    • https://cdn.sqhk.co/doginifa/cihjgCY/classroom_management_strategies_elementary.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453344/normal_60203dc09feda.pdfIn PDF document text
    • http://kojibataruv.iblogger.org/dogotebukezuna.pdfIn PDF document text
    • https://pemugaladesav.weebly.com/uploads/1/3/5/3/135307247/7598532.pdfIn PDF document text
    • https://gawujura.weebly.com/uploads/1/3/5/3/135325150/suvuvesopojeginogus.pdfIn PDF document text
    • http://wegisinebirixe.iblogger.org/bluetooth_mouse_steam_link_android.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413120/normal_5ffb12dd84854.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://zefuxaninegug.epizy.com/nuvufofimafanemesuj.pdfIn PDF document text
    • http://baguzakanaso.epizy.com/iracing_dirt_street_stock_setup_guide.pdfIn PDF document text
    • http://ruzuvune.epizy.com/boss_engira_baskaran_songs_isaimini.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_off000110d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110D8 5184 bytes
SHA-256: 3b0b21963aa3c4621c139429a4b0b147857b756b8f5c2aff0776283d3634ae77
font_01_sfnt_off0001226c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1226C 10836 bytes
SHA-256: f91cb0e909b74a91ed8a61e6bb0e3cdadebad8476ba69a15d3a7c37f3020a4eb
font_02_sfnt_off0001473e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1473E 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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