Malicious PDF — malware analysis report

Static analysis result for SHA-256 560719ef566a0a0e…

MALICIOUS

PDF

79.2 KB Created: 2021-03-22 06:40:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 86fcefd49ec72e3e15afb385287c71e3 SHA-1: 3a0f71eb0fcf6bf5af9ad1cd10c74c4826665448 SHA-256: 560719ef566a0a0e092fda133a4af90a85019603d08380c2f8ba8873c1a1fc0c
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier indicating maliciousness. The PDF contains a large number of embedded URIs, many pointing to disposable hosting, suggesting a link farm or phishing lure. The presence of external URIs and the PDF's classification as a phishing trojan indicate it is designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jacksth.ru/strik?utm_term=the+making+of+a+poem+table+of+contents PDF link annotation
    • https://cdn.sqhk.co/jeporikate/j8fihgi/finaj.pdfIn PDF document text
    • http://wordwild-store.com/ritezukakimivogap03s0p.pdfIn PDF document text
    • http://mylic.ru/how_to_connect_jaybird_headphones_to_iphone_xx809r.pdfIn PDF document text
    • https://cdn.sqhk.co/ladesajisama/jdjzv2f/lofoxivavoleravenegeso.pdfIn PDF document text
    • http://sokegex.mywebcommunity.org/digital_product_designer_salary.pdfIn PDF document text
    • http://eglo.club/6958964631t03wm.pdfIn PDF document text
    • http://reliables.ru/boy_birthday_cake_imageshqett.pdfIn PDF document text
    • http://jezewujedufeg.iblogger.org/digibijibaxuj.pdfIn PDF document text
    • http://wacc-cat.org/sukobevofuwofusibd544.pdfIn PDF document text
    • http://dashcamtopbest.com/star_trek_discovery_episode_1_free_online8jtxm.pdfIn PDF document text
    • http://spencermcman.us/logavagifijamekadonejuxe3jqt6.pdfIn PDF document text
    • http://islemleriniz.org/85033078812rukjh.pdfIn PDF document text
    • http://bawilidow.mypressonline.com/9979201281.pdfIn PDF document text
    • http://pmaider.com/67704072670qjldp.pdfIn PDF document text
    • https://cdn.sqhk.co/xawowaguka/gijhjje/android_cricket_game_app.pdfIn PDF document text
    • http://nitanupemil.mygamesonline.org/business_card_design_free_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wabanatebaxu.epizy.com/19812153117.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/64761929185.pdfIn PDF document text
    • http://vudujufilax.epizy.com/73935655162.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/honeywell_thermostat_owners_manual_rth221b1000.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/49676259934.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/drama_korea_aftermath_2014_subtitle_indonesia.pdfIn PDF document text
    • http://suzufesa.epizy.com/41579510229.pdfIn PDF document text
    • http://kazaxese.epizy.com/informacion_sobre_el_cauquen_colorado.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_off0000f581.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF581 5484 bytes
SHA-256: bdcf060806d2b40bf4c50081e3493a637ddcf519c40b457a02f62af4ab22ae44
font_01_sfnt_off0001080a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1080A 11508 bytes
SHA-256: 689fb7e46085eed772ef316e6842ce2d4cece44ef23e40d9fd8f2ce42dfc5cc8

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