Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1f7ddc9c60fe287…

MALICIOUS

PDF

74.0 KB Created: 2021-03-17 14:24:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6cf4a5bb875c38698b193db8bd830288 SHA-1: 7a9dd5d96f4a2c85c89d4cfd9ff30f189c712224 SHA-256: f1f7ddc9c60fe2879e1b038945ff3b1b5551dcb9013137dd7a507d45689c68ec
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a large number of external links, suggesting a link farm or phishing attempt. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic indicate that the primary function is to redirect users to potentially harmful external websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/wix?keyword=tenergy+tb6b+charger+manual
    • http://tiruxukanemaga.iblogger.org/free_las_vegas_bachelorette_itinerary_template.pdf
    • http://varerafuvurine.22web.org/vugudedejewaxuva.pdf
    • http://zuzovitedifuzow.22web.org/where_to_watch_the_shack_online_for_free.pdf
    • http://zamikubano.22web.org/wallpaper_i_love_you_wala.pdf
    • https://cdn.sqhk.co/reriwoduriju/eyjj3hf/i_gladiatori_pizzeria_albavilla.pdf
    • https://sazopugewado.weebly.com/uploads/1/3/1/4/131453094/gugub_pemugiwutunal.pdf
    • https://cdn.sqhk.co/sufadoma/ha5Njdp/gun_strike_shoot_fire_mod.pdf
    • https://diloxutal.weebly.com/uploads/1/3/4/5/134598378/bejopoporanawo-memiganipig-risir.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/64719e7a-285c-426a-88f4-5e24b4778f7e/gurovanunezek.pdf
    • https://s3.amazonaws.com/dewutexorob/ejemplos_de_actos_juridicos_formales_solemnes.pdf
    • https://s3.amazonaws.com/kelukakeb/84332686782.pdf
    • https://uploads.strikinglycdn.com/files/2e6f7c1d-c1f5-41ae-91c1-a4233df6ba1f/2839205994.pdf
    • https://uploads.strikinglycdn.com/files/1ca125a6-348e-459d-ba1e-ae885b49dc75/black_and_decker_digital_advantage_iron_instructions.pdf
    • https://uploads.strikinglycdn.com/files/3800695e-761b-4639-80a8-af0fa11bb531/why_is_my_vizio_tv_screen_dark_on_one_side.pdf
    • https://s3.amazonaws.com/geraromu/simesibuwevevidunisaweren.pdf
    • https://uploads.strikinglycdn.com/files/8cc546fb-98bb-4c0a-a3cc-8aaa734006fd/resumen_de_un_grito_desesperado_capitulo_3.pdf
    • https://uploads.strikinglycdn.com/files/08ab3fe1-0ef8-4ad5-a97a-5ac1fe4cdf6b/five_dialogues_plato_sparknotes.pdf
    • https://uploads.strikinglycdn.com/files/311f0871-478b-46d6-ac87-97d041328d26/what_happened_to_little_house_on_the_prairie_cast.pdf
    • https://s3.amazonaws.com/wulagisi/biblia_reina_valera_para_celular.pdf
    • http://paluluw.epizy.com/electric_field_problems_and_solutions.pdf
    • https://uploads.strikinglycdn.com/files/57179126-c5bd-421f-aac3-96407e5f8a88/78638116683.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e141.bin
470610bfaab365f3517b25cdfccbaef0a380d6e63f8aaba17dacbe2cde391dac		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE141 5380 bytes
font_01_sfnt_off0000f372.bin
82e7da1e133cdd6ed6ac8c7e7adb4e2f29683b59a2eff08cc46546435d919d21		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF372 11132 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.