Malicious PDF — malware analysis report

Static analysis result for SHA-256 411202bea1b5f7d4…

MALICIOUS

PDF

75.0 KB Created: 2021-03-08 00:42:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 39c085759918f61cc9e7e291887aae5e SHA-1: b2cac42bcad4b91c6dcee6fe89aaf195d244b44f SHA-256: 411202bea1b5f7d4d6952953b12e8ac1e6808e0d870cb9c792c3124eeacfda1e
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery, with the primary lure being a fake download for 'Fifa 14 apk'. No scripts were extracted, but the presence of external URIs and the overall structure point towards a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pelibifir.ru/wix?keyword=fifa+14+apk+full+unlocked+free+download PDF link annotation
    • http://wisiripivi.22web.org/power_system_analysis_and_design_5th_edition.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gagisejokunego.rf.gd/how_to_subscribe_on_twitch_mobile_ios.pdfIn PDF document text
    • https://113c517c-d7b0-4b36-99d7-6722bcb7ef36.filesusr.com/ugd/8e66a5_fb10a1206f80424387618ef9bf066f04.pdf?index=trueIn PDF document text
    • http://menepanago.rf.gd/vumeboluza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ad5bc01-07e4-4f11-9c36-40e8e2ef5f42/xiromevufenupigofupavax.pdfIn PDF document text
    • https://b564fea6-732e-489f-a029-a72dc6590de2.filesusr.com/ugd/6a4619_52769e1cefd44227af682d27d100cdee.pdf?index=trueIn PDF document text
    • http://topeleseluvon.rf.gd/the_darkest_minds_book_2_ending.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/wubulovivipeduwitipaziram.pdfIn PDF document text
    • http://dakafatuvuguviz.atwebpages.com/bally_slot_machine_repair_manual_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66f6d9f5-4a21-4073-ba6e-0639e2d5838c/nopumutoratobus.pdfIn PDF document text
    • http://palelezugob.onlinewebshop.net/reglas_de_acentuacin_para_palabras_agudas_graves_esdrjulas_y_sobresdrjulas.pdfIn PDF document text
    • https://s3.amazonaws.com/bamepofewalada/update_android_oreo_galaxy_s7.pdfIn PDF document text
    • http://sotexazonilot.rf.gd/easy_duplicate_finder_license_key_5.22.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ebf3d75-8ff4-4731-8f3f-41151f71ea32/1_maus_fr_2_pcs.pdfIn PDF document text
    • http://wenares.myartsonline.com/dibujo_del_cuerpo_humano_y_sus_partes_en_ingls.pdfIn PDF document text
    • https://d0a6b1b1-1773-4622-8b5e-0ab5990a7ed3.filesusr.com/ugd/b90ba1_7c54e7775d4843aebbc1bfb62ac0fc76.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/63d86c43-942e-4922-a4cb-6193a0507488/87992941854.pdfIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/ripepapolukuzagulorak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60f6a3ea-cd1d-4474-a126-c1f87d6cdb01/rangers_apprentice_the_ruins_of_gorlan_reading_level.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_off0000e7d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D0 5220 bytes
SHA-256: d09bf69d68c5e77a89e95ea654f094b7e2c59e2fc7b42790fc6e2bd4773d8665
font_01_sfnt_off0000f9c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C6 10708 bytes
SHA-256: 7658ae325645d33a2a10d26a5560686fe5ee5558c518efd9b783da500866cf34

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