Malicious PDF — malware analysis report

Static analysis result for SHA-256 c87fbd473ea56b25…

MALICIOUS

PDF

146.9 KB Created: 2021-06-09 01:33:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: e710f5b37fc8aae5caede2427177c066 SHA-1: 57be278abb94b8c913962ede71da82e88c42da58 SHA-256: c87fbd473ea56b2576c263728ca040b65b9804df636b61cad6c366efe52930f7
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external URIs, with a primary one pointing to 'https://pixomot.ru/pbw?utm_term=monster+girl+doctor+manga+online', suggesting a lure to a malicious website. The document body is heavily obfuscated, preventing a clear understanding of its specific content, but the presence of many links and the ML detection strongly suggest a malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

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://pixomot.ru/pbw?utm_term=monster+girl+doctor+manga+online PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4416154/normal_5fec4add0ebd7.pdfIn PDF document text
    • https://falopizesolirod.weebly.com/uploads/1/3/1/3/131379111/zoxokiwatezaberidinu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413967/normal_6032741420cc4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369304/normal_5fd3a78780b67.pdfIn PDF document text
    • https://kawuzuvom.weebly.com/uploads/1/3/1/3/131379118/poselunotulek-xigib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461202/normal_606b6e8031951.pdfIn PDF document text
    • https://mowolonob.weebly.com/uploads/1/3/4/8/134874237/naserab.pdfIn PDF document text
    • https://geduxajof.weebly.com/uploads/1/3/4/3/134328978/robopeginawa.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/20455360-f291-40b5-91da-5d755df3bcdc/directv_genie_2_cost.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/464df816-ba5b-4252-9753-e44f3bbfe6e6/is_it_worth_buying_kindle_in_india.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f06448db-31a4-4133-a5bf-64c1330c6f5c/miracle_frp_tool_thunder_edition_v1_47_crack_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef0d792a-b9ab-4e41-8abb-6a5f91394d2b/fajawoxoxezizevuwaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a20150a3-386c-4799-9da1-7800237cf006/pomotovugudapoge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90fc4b4c-4f3e-465c-89de-1c4292f08667/wudivozogapijojelanozoje.pdfIn PDF document text
    • http://supatibu.pbworks.com/f/tere_bina_jeena_saza_ho_gaya_sanu_dj_song_mp3.pdfIn PDF document text
    • http://pojaweku.pbworks.com/w/file/fetch/144463242/maruwinemevixanelunod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03d5011d-5767-4756-85d2-de42e479f559/how_to_set_a_brookstone_projection_clock.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cf7d75d-d1c7-47d8-bdf3-a3bc763ff247/statistics_principles_and_methods_7th_edition_reddit.pdfIn PDF document text
    • http://namimutigete.pbworks.com/w/file/fetch/144747765/what_is_reflexivity_in_economics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3ed1f28-635a-42ae-89ca-0e07f46a29d2/33140476135.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fbc3b69-e89c-43a4-8d51-1055f6af291e/what_to_cook_for_dinner_in_air_fryer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b3c2682-d323-40e4-a070-1cceb39877c9/un_poema_corto_en_lengua_nahuatl_y_en_espaol.pdfIn PDF document text
    • http://sutodoromar.pbworks.com/f/banana_pi_r2_images.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8d1730f-6c35-4c11-aa43-747c1e4338a0/18270867748.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014a74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A74 44204 bytes
SHA-256: ed59284957b56296010409e92cc0d57ea44587eeb71fa3caac76fa5a3daddee0
font_01_sfnt_off0001d14b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D14B 5052 bytes
SHA-256: 3a8bc95d4baaec15910b348cf01bf268a63ba2099b37e83b710a5a9ee8546dbc
font_02_sfnt_off0001e24f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E24F 2688 bytes
SHA-256: ff5ea5a9186fab4fe0b62b3ad0c43234b45fae97d7834ab4d2cea52b3041928c
font_03_sfnt_off0001ede7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EDE7 12460 bytes
SHA-256: 6428678cab6c7866939c00c345c7dc68cab8baf1a531419865f33ab724331668
font_04_sfnt_off000216c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x216C4 16284 bytes
SHA-256: f6a7c8d7a624d2e12ee0ece8cb9f6e6263ad585e706a9ed137a587038ca9a21c
font_05_sfnt_off00022c69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22C69 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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