Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae8d139131ce0e96…

MALICIOUS

PDF

73.0 KB Created: 2021-04-01 11:42:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 057ef863e3600244f9bedb0911f34e82 SHA-1: 6b2ec3f210798c474d859c8ed1038d345fda5e70 SHA-256: ae8d139131ce0e9650d1e3714c78f80272871176101485bcbfc12cc434ec4cb1
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs, with a significant number pointing to disposable domains and potentially malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically identified as a phishing or trojan variant. While no scripts were directly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious sites, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://soxebez.ru/wix?keyword=dewalt+dw660+accessories PDF link annotation
    • http://mosomupusafebin.medianewsonline.com/24619363904.pdfIn PDF document text
    • http://zofugef.mypressonline.com/applied_economics_deped.pdfIn PDF document text
    • http://giwitap.getenjoyment.net/10233336811.pdfIn PDF document text
    • http://fumizudo.sportsontheweb.net/sokamekil.pdfIn PDF document text
    • http://lizowaw.scienceontheweb.net/dasebugorigoludirogoki.pdfIn PDF document text
    • http://taforojujutusig.mygamesonline.org/72770410399.pdfIn PDF document text
    • http://juxumigine.mypressonline.com/adenanthera_pavonina.pdfIn PDF document text
    • http://simopuvoramawu.mywebcommunity.org/55126361830.pdfIn PDF document text
    • http://paxabak.mypressonline.com/76252972634.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/9842bf74-2faa-4394-a726-17b534856955/7742175659.pdfIn PDF document text
    • http://lelikerakovet.atwebpages.com/baminodivas.pdfIn PDF document text
    • https://s3.amazonaws.com/wizomoravazub/cleric_spell_slots_5e.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcb0f06a-7245-4fb9-a0b0-a120789740ae/suzotijedizutiratun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92b7efe5-5ffd-47c1-9709-621ddf3ef6b1/whats_the_difference_between_an_llc_and_a_professional_llc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edaf1e5e-5360-445c-bc8b-1b18d776aad8/swann_security_camera_cable_length.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/729bd113-8000-4c8d-b2ad-a893812e5eb0/traditional_catholic_jesse_tree_ornaments.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ecf87a9-0a5f-4912-b635-fc6a3acc87f6/ganitelerutin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a8185a3-1bff-4092-b1fe-2bd1eb0deda7/what_does_plato_principal_means_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bade8c8-c15c-4a1f-bcbf-6a4b2ef59c74/behringer_xenyx_302usb_driver_download.pdfIn PDF document text
    • https://s3.amazonaws.com/fuvidokibet/minority_report_2002_dual_audio_480p.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bb07490-671c-4e14-94da-3f2dad19558e/6-2_practice_tests_for_parallelograms_answers.pdfIn PDF document text
    • http://nufulavidibime.myartsonline.com/descargar_libros_tres_metros_sobre_el_cielo_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/where_to_find_model_number_on_grohe_faucet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc42c3af-a2f1-402f-b141-8b993d34aaa9/autocad_3d_commands_with_examples_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/fz_bike_200_cc_price.pdfIn PDF document text
    • http://pojoviraxerojo.myartsonline.com/lakukutikaxofoxe.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_off0000e061.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE061 5320 bytes
SHA-256: 86c9dbaafe2fa7db3a3aa89c230bf026971836d821b47de571cfad87a7f55278
font_01_sfnt_off0000f297.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF297 10132 bytes
SHA-256: 5914f8a2d2c341ebcd0c47ef01e02ebd8ec1f7fcf1cf823c6bb84328adabca8c