Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb7f054b81cb1fff…

MALICIOUS

PDF

83.0 KB Created: 2021-03-15 17:50:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 05a6de2e0406bcd5aca2f6f5de22b7ea SHA-1: de8fbcd601cb9bc27676aa8a9210e0fcb89b0543 SHA-256: bb7f054b81cb1fff94f12a79ef942e9fb45da05cb30eae79e2dca413769f4677
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by heuristics as a potential phishing or malware distribution vector. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fokemale.ru/award?keyword=tipos+de+sustantivos+en+ingles+pdf PDF link annotation
    • http://digitaloffice24.ru/45616582392ez21e.pdfIn PDF document text
    • http://juvizex.sportsontheweb.net/king_henry_doesnt_drink_chocolate_milk_chart.pdfIn PDF document text
    • http://secret-empire.ru/12343960478enr3v.pdfIn PDF document text
    • http://reactivaperu-2020.com/anno_2205_veteran_guidequvgi.pdfIn PDF document text
    • http://ravovenovibu.medianewsonline.com/eagle_cuda_168_power_cable.pdfIn PDF document text
    • http://cashbackmoney.info/63634729231lyi15.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/c05ace78-af7c-4de8-bdb1-77c139ef1a7a/what_nfl_teams_have_cheerleaders.pdfIn PDF document text
    • https://s3.amazonaws.com/godoremitiwuja/echo_pb-250_gas_mixture.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc32ec1f-e592-481e-bb00-9ed89eebb70e/71613285941.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/angular_6_component_dynamic_template.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/bypass_proxy_server_for_local_addresses_android.pdfIn PDF document text
    • https://s3.amazonaws.com/sezewu/92686280068.pdfIn PDF document text
    • https://s3.amazonaws.com/ratixifo/contract_agreement.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/bolo_de_cenoura_fofinho_em_forma_grande.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68063383-8023-4327-ab3c-361234719d71/niwewiwidig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a5e8eec-8378-4d9d-ba22-15e0d3ea185c/imax_b6ac_80w_6a_updated_balance_charger_discharge.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/benokipub.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/can_you_mark_mail_return_to_sender.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/which_is_the_easiest_drone_to_fly.pdfIn PDF document text
    • http://tiwosutodegadax.onlinewebshop.net/98905440764.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/37428990042.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/20910642779.pdfIn PDF document text
    • https://s3.amazonaws.com/liluvad/individual_development_plan_template_government.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0446220-67d0-4c8a-a665-998c85fa4c41/71833708953.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f781.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF781 5004 bytes
SHA-256: be0c9356f4c0b2f7a10c630fac8046f8f4b2f0c7c6892ac7467fcb4060e3a015
font_01_sfnt_off0001089e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1089E 12084 bytes
SHA-256: e3f0e144e3e8d8a6f8f8c01dabdf5716f6390a64039d8818e21847715d0e5194
font_02_sfnt_off00012fdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FDB 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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