Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f1edfb5e6823a5c…

MALICIOUS

PDF

93.3 KB Created: 2021-02-28 04:40:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 450d2dde221697b8ab536843a26c9dbc SHA-1: a62fe884254a6c356d331271f8c6ebaa1430c805 SHA-256: 2f1edfb5e6823a5c7286b0c45110977810272fbae4e07a269ff4946f10e63435
106 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File T1059.007 JavaScript

The PDF document contains numerous embedded URLs, many pointing to disposable hosting services, and a heuristic identified it as a link farm. The document body, though heavily obfuscated, contains text related to 'Ipod nano 3th generation price' and 'wkhtmltopdf', suggesting a lure. A high-severity heuristic specifically flagged a 'Remote-support tool lure', indicating the document likely instructs the user to install or connect to such tools, which is a common tactic for gaining unauthorized access.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://jacksth.ru/strik?utm_term=ipod+nano+3th+generation+price PDF link annotation
    • https://juzajepilokak.weebly.com/uploads/1/3/4/6/134682244/jawojamopumibi.pdfIn PDF document text
    • https://marotebage.weebly.com/uploads/1/3/4/7/134712984/vawukuporajajeki.pdfIn PDF document text
    • http://vuzuwul.getenjoyment.net/56491671471.pdfIn PDF document text
    • https://polavimiwusirew.weebly.com/uploads/1/3/2/6/132681763/e4312.pdfIn PDF document text
    • https://tirusagoxavux.weebly.com/uploads/1/3/5/3/135329940/vusiroxurutol.pdfIn PDF document text
    • http://nusowutevu.getenjoyment.net/62347153626.pdfIn PDF document text
    • http://megantv.site/vugomavusubejesebilohx2mf.pdfIn PDF document text
    • http://tekeriset.iblogger.org/buy_fitted_bed_sheets_online.pdfIn PDF document text
    • http://wabuxon.iblogger.org/vesoxow.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://regipikiwubadov.epizy.com/bibi_bourelly_album.pdfIn PDF document text
    • http://pesipobigon.rf.gd/wedding_reception_order_of_events_template.pdfIn PDF document text
    • http://ginowane.onlinewebshop.net/77777870627.pdfIn PDF document text
    • http://pujuban.rf.gd/biguribomijutixosavupa.pdfIn PDF document text
    • http://sugizujesel.epizy.com/69482715931.pdfIn PDF document text
    • http://xalobazinapirep.epizy.com/shadow_of_night_audiobook_vk.pdfIn PDF document text
    • http://sopolakomuz.rf.gd/degogemozeger.pdfIn PDF document text
    • http://nepanazunisemi.epizy.com/75152830371.pdfIn PDF document text
    • http://xofivijisaja.rf.gd/descriptive_writing_worksheets_for_grade_7.pdfIn PDF document text
    • http://kegapijev.rf.gd/3d_scanner_pro_apk.pdfIn PDF document text
    • http://bupozefi.epizy.com/32405049578.pdfIn PDF document text
    • http://bufijonewufo.onlinewebshop.net/dizife.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_off00012dc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DC4 5228 bytes
SHA-256: 07d6a798c3e3ef96c9ee14fd6265b21ded5cd854b402d2c5ada9227156d6cbb7
font_01_sfnt_off00013f8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F8D 11956 bytes
SHA-256: 6184faec0fc73f90bbfb593ad4ec01de3a53beef6a9e1753fecac88edf38ec4e

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