Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc020f09b9967712…

MALICIOUS

PDF

76.2 KB Created: 2021-03-26 07:54:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62efe0894da4657a8a5c200aa160ff7f SHA-1: 771c6a3524a38a0a70e7e25496c06b98bc6a380f SHA-256: cc020f09b996771231d9d0c6ea1e49fb28ce3e62551aa2368af801cd57065551
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL pointing to a suspicious domain, suggesting a link farm or phishing attempt. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The document body, though heavily obfuscated, appears to be a lure related to product search terms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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-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://nipisod.ru/strik?utm_term=char+griller+smoker+box+lowes
    • http://tuwafanumi.iblogger.org/jivusobatoxememen.pdf
    • https://cdn.sqhk.co/doxurozupu/AygfCkl/60039062322.pdf
    • https://cdn.sqhk.co/xotakuzazuf/H1ib8if/kutokewi.pdf
    • https://cdn.sqhk.co/revujinarewu/jOjfji8/jajevimerupadezolekop.pdf
    • https://cdn.sqhk.co/ferobisuw/jSxYhdt/transport_tycoon_fivem.pdf
    • https://cdn.sqhk.co/futevanu/hcXFyfT/20513124119.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://9c12218e-e157-4070-b33f-4467b3cb42bb.filesusr.com/ugd/0c60a0_1d15784242114209986d2d2ed9b17845.pdf?index=true
    • https://f3ea461b-95fd-44cf-949c-5afda193840f.filesusr.com/ugd/a48928_9eb6f838b4a741958c146cee9fd2dcdc.pdf?index=true
    • http://bopexetosezulav.rf.gd/57918843319.pdf
    • https://53f03ce6-db0b-4f41-9bfc-6956ba41e1f4.filesusr.com/ugd/727e0f_3d2c8930a82542b98fb1b90a2c004132.pdf?index=true
    • https://s3.amazonaws.com/vuzotisenixava/rozudajanok.pdf
    • https://5c9c3928-af7d-4195-9e43-9647d7263c15.filesusr.com/ugd/508998_1819c8acd32d4b7cbad667d0f8c7a370.pdf?index=true
    • https://45ae50e1-98a8-4501-9ad6-fc0df438eb43.filesusr.com/ugd/b16523_a6cc289fed074ec3af05525726f3e04e.pdf?index=true
    • https://s3.amazonaws.com/zedilegol/95836922044.pdf
    • https://s3.amazonaws.com/loxopudizus/how_to_test_a_washing_machine_actuator.pdf
    • https://3c59ccad-08dd-474b-8af0-a42d91f20399.filesusr.com/ugd/489ff0_4da8352613fa4f698d8fc4b9fde9ec40.pdf?index=true
    • http://miwunomo.epizy.com/que_es_genero_literario_poesia.pdf
    • http://xakireponamo.rf.gd/zukabiwonalim.pdf
    • https://s3.amazonaws.com/xumakomowi/commandos_2_destination_paris_1._46.pdf
    • https://s3.amazonaws.com/julaxel/tesikinokurolo.pdf
    • https://f05e0dbb-21cf-40ea-8b71-00b8d6f49a3b.filesusr.com/ugd/b09e1d_aa0e7397e44f44d9bf34a7c182dba629.pdf?index=true
    • https://s3.amazonaws.com/livivuvuwugeb/global_marketing_manager_salary_us.pdf
    • https://s3.amazonaws.com/wutogugej/64380512844.pdf
    • https://6754c94d-8795-460a-880d-d127bb37d4d4.filesusr.com/ugd/2383dc_bbde8a00a9da450d81cc57fcd9cab2ab.pdf?index=true
    • https://s3.amazonaws.com/bupesejirijejus/email_formal_en_ingles_para_presentarse.pdf
    • https://s3.amazonaws.com/dorulusof/82818179445.pdf
    • https://5ec50ee2-6c76-415b-b731-82d7de26534b.filesusr.com/ugd/826e74_16bb0fde2d254e7da9ddfcd50db7ac82.pdf?index=true
    • https://s3.amazonaws.com/metubevozisul/how_to_scan_multiple_pages_on_hp_deskjet_3050a.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_off0000e9fc.bin
358124b55b44861ad4c71c805d0f086c312c39677200bef126ac50002aabc8e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9FC 5368 bytes
font_01_sfnt_off0000fc23.bin
2277f1f498bb075dbf021914f911238223a8d8734cc875cae8d44d84cbcb8474		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC23 11368 bytes

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