Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc45dc4932057742…

MALICIOUS

PDF

84.9 KB Created: 2021-05-20 22:28:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 2d63b4ae3f86ac489a997cc0ab8fb640 SHA-1: ed7e43ac98229cfeb2f91e5896a03e20d431f7a2 SHA-256: bc45dc49320577426b96c05e2a7a6bc57c6194bbf2b7f532f613b024ee298e40
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The PDF contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. While no scripts were directly extracted, the presence of embedded URLs and the overall heuristic firings suggest an attempt to exploit users through deceptive content, likely related to the search terms found in the URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 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.
  • 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://ponafet.ru/strik?utm_term=hamari+adhuri+kahani+movie+download+480p+filmywap PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4373985/normal_5fe22026ab865.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468553/normal_600f20135014d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503578/normal_605f4c67ae983.pdfIn PDF document text
    • https://vinosubolab.weebly.com/uploads/1/3/5/3/135316207/duxap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453102/normal_600fdb626a35b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481667/normal_5fd348255182f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473938/normal_5ff3506862979.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421612/normal_600e88979be1d.pdfIn PDF document text
    • https://wukemurorafol.weebly.com/uploads/1/3/4/3/134338373/zifexini.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/6f68a061-9715-41b2-b4f9-161243f5505b/standard_normal_distribution_table_two_tailed_test.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/152e9822-8059-4d30-bfe7-fb7f1f1da9c2/11149543138.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bdf0268-0031-496f-9b8e-0851830c1ae7/how_to_replace_waste_toner_box.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56042054-5ea9-4d2a-acd7-7814fb80a20b/how_to_clean_bose_wave_radio_cd_player.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02431e10-3012-4ea9-a2c2-69df6596eda5/xbox_360_wired_controller_driver_windows_7_64_bit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d50c913-66d2-4a9c-a751-a1ed2000302a/how_do_i_turn_the_security_light_off_in_my_car.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3f3d9fc-e7b1-4e66-8df0-d62d17dbc085/rome_2_total_war_campaign_strategy_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03a69265-215d-4809-a0b2-71e6bf3da999/what_is_the_difference_between_soa_service_oriented_architecture_and_cloud_computing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66e8f7b9-b77a-42cf-96b3-936cac89f9e2/how_can_i_watch_netflix_on_my_tv_with_headphones.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f81e3884-c3ca-4273-bac7-a76254f756f3/6224465790.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78927f26-de33-41a6-93e8-d298df69e75b/how_to_setup_the_netgear_n300_wifi_range_extender.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94bfc8e2-107a-4c89-89bf-50b541556efb/the_girl_who_fell_from_the_sky_characters.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F7 3132 bytes
SHA-256: ba49dac1d2dbbb7e1889e1689beee71e55ab4ec57d27fac1e8c8cc4dc5638043
font_01_sfnt_off0000fce3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE3 5608 bytes
SHA-256: c7e34cf1184ba86e783801b43afff14b94e73c1d5c62be809421078aba470424
font_02_sfnt_off00010fdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FDC 11004 bytes
SHA-256: 627c84fd798d8023a37b72e1c0a24ff5a4496105effd75c91173fbd39b62be48
font_03_sfnt_off000134e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134E7 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361