Malicious PDF — malware analysis report

Static analysis result for SHA-256 d09976e7683fbe8c…

MALICIOUS

PDF

90.3 KB Created: 2021-03-21 05:14:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 5037de2d95081f75649e6f06a5a87199 SHA-1: 7b601c01d66fd7fe60eefa3590c8592c7f8eda5a SHA-256: d09976e7683fbe8caf47dc7c9f6353f5040776adde16ffd6fabf08f6593bc918
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable hosting or link farms, suggesting an attempt to redirect users to malicious sites. The document body, though heavily obfuscated, contains keywords like 'award' and references to 'airways management pdf', likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://ponafet.ru/award?keyword=airways+management+pdf PDF link annotation
    • http://masewir.22web.org/jack_reacher_books_in_reading_order_uk.pdfIn PDF document text
    • https://borerejo.weebly.com/uploads/1/3/4/0/134040615/sixuzimi_kakiju_vusatobefar_buxiwuroxotegem.pdfIn PDF document text
    • http://nixuvukoda.iblogger.org/chrome_os_android.pdfIn PDF document text
    • https://todegebonuvakef.weebly.com/uploads/1/3/1/6/131606144/notur.pdfIn PDF document text
    • http://mgacessoria.online/wewukulapevezuli24exw.pdfIn PDF document text
    • https://cdn.sqhk.co/jezaziritav/chihimG/robux_calc_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/gedugari/SjjUtii/48718864538.pdfIn PDF document text
    • http://sallles.ru/how_does_social_learning_theory_explain_gender_developmenth92h3.pdfIn PDF document text
    • http://mon-compte-cmb.best/mazda_android_auto_retrofit_usat9xh1.pdfIn PDF document text
    • https://cdn.sqhk.co/xinulezebi/5ifN6ZK/75385339302.pdfIn PDF document text
    • https://wubajepetodol.weebly.com/uploads/1/3/1/6/131606368/sapadabiwinotepoxovo.pdfIn PDF document text
    • http://daddytestit.xyz/14463432008ydfkn.pdfIn PDF document text
    • https://cdn.sqhk.co/jolodovi/g3nheV4/screen_color_control_root.pdfIn PDF document text
    • https://bokobuduvi.weebly.com/uploads/1/3/5/3/135347682/gurixa.pdfIn PDF document text
    • https://cdn.sqhk.co/deloreba/EthiQLg/dress_up_games_free_download_for_pc.pdfIn PDF document text
    • http://ing-cliente.com/current_washington_state_us_senators72fr1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xamazaxalezamat.rf.gd/174749830.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/627e5045-5af9-4a75-bec3-64784e2da2fe/will_trs_retirees_get_a_raise_in_2020.pdfIn PDF document text
    • http://xufojeji.epizy.com/internet_calling_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4ba16fe-d1a7-4800-8934-90749baaad44/ejemplo_de_memorandum_multiple.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3d766a7-efc9-4117-b750-567401c9ad71/88414370473.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2da05093-842f-487a-8ed0-01e09e7643e0/78157027694.pdfIn PDF document text
    • http://jizozekawa.epizy.com/bubble_level_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9954e3ab-7ccf-4510-8a7c-7ccd41527942/51383720980.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93595453-bf90-4a58-8fa9-897d1027f8f5/car_wash_cleaning_checklist.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_off000121c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121C7 5512 bytes
SHA-256: ef55d912e562dc9c69f514bfb19cf8816a9d9ecde9fba369f492d2ac69583575
font_01_sfnt_off00013496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13496 12212 bytes
SHA-256: f8afe33f9c7f16c27678d64c0be14f9e2cb25f798b71c2f7a36bb0055ef7cad3

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