Malicious PDF — malware analysis report

Static analysis result for SHA-256 4795eee7ef333838…

MALICIOUS

PDF

88.2 KB Created: 2021-03-19 17:04:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 605e40dab429396fb9532cde70845b04 SHA-1: 1afa436eba10c5b75f5c859cd823f96669af881b SHA-256: 4795eee7ef333838c5eb4cc6f8deea56bde9c64630c284967785c88efb4f662b
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of 'utm_term' parameters in some URLs further supports a phishing or spamming intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9958

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://jumiwimov.ru/strik?utm_term=casio+hr-100tm+will+not+print PDF link annotation
    • https://cdn.sqhk.co/pevejotomoma/Mhhs7hj/download_oceanhorn_2_apk_data_full.pdfIn PDF document text
    • http://cashbackk.site/5455953328ei9zb.pdfIn PDF document text
    • http://onlyforyou.space/auto_clicker_for_ipad7svmy.pdfIn PDF document text
    • http://wifisef.medianewsonline.com/astrology_books_free_download.pdfIn PDF document text
    • http://tikovg.xyz/804683398005d8jk.pdfIn PDF document text
    • http://fruit-ita.fun/61171710712sl551.pdfIn PDF document text
    • https://cdn.sqhk.co/gixedomawa/fQhehhi/evacuumstore_near_me.pdfIn PDF document text
    • http://fenellalucynelle.info/2004_lamborghini_gallardo_price_newbbxjb.pdfIn PDF document text
    • http://roskycnmx.com/kafejimogaliwafirimudawaddi4kk.pdfIn PDF document text
    • https://cdn.sqhk.co/kuvuzebilet/lvwge9l/46595003486.pdfIn PDF document text
    • http://ductsunlimitedins.com/6134520847ovkij.pdfIn PDF document text
    • http://bilet-pdd.site/teoria_de_circuitos_electricosx5s56.pdfIn PDF document text
    • http://sepozimog.scienceontheweb.net/16313202981.pdfIn PDF document text
    • http://xezixaz.getenjoyment.net/89864153810.pdfIn PDF document text
    • https://cdn.sqhk.co/rotonoba/gdb3ifY/black_panther_cast.pdfIn PDF document text
    • http://setlyb.online/yiruma_river_flows_in_you_piano_notes_easyydifh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c02e636-220c-499e-be5f-d6a4cb3c7f0b/resumen_corto_del_libro_mi_pequeo_vampiro.pdfIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/ge_universal_remote_control_codes_for_insignia_tv.pdfIn PDF document text
    • http://masemipeba.myartsonline.com/lejokugipukajilabisagaguv.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/18132906916.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/717e4700-9c5c-4c68-8a9d-a034c947b1fc/jotixavenu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb320679-c4a8-4eda-8a3d-29a228625ad0/what_does_esv_mean_in_the_bible.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37ae0f55-8803-4124-a416-9d55dcd52a13/60053672726.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/65382981472.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/used_troy_bilt_lawn_mower_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3c4987a-2a0d-4557-bc30-1ca45b4e9f95/how_to_find_variable_cost_ratio.pdfIn PDF document text
    • http://nimanexobubibub.onlinewebshop.net/la_esposa_que_ora_dia_1.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_off00011630.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11630 5284 bytes
SHA-256: 4be0fc22f5f0c15397820f6419f2a28339d9ff2eee0cb6bca49556c67659ca5a
font_01_sfnt_off0001280e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1280E 13600 bytes
SHA-256: 43c8e3388aa308270a924c42966819385493794d25eae0c10a34832c5dac8c13