Malicious PDF — malware analysis report

Static analysis result for SHA-256 749186a7810b4372…

MALICIOUS

PDF

74.7 KB Created: 2021-04-05 07:54:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f5c604c9c511cbc7f0ac28a07ec61ae SHA-1: 65c7447961de70dc05d1dc459c3bacfcc6bcbcaa SHA-256: 749186a7810b4372ed65b0980481888a20c03386d0daaa95d5efbf9bce383da0
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating the presence of an external URI. The PDF contains obfuscated content that appears to be a lure for a service manual, likely to trick users into downloading further malicious content. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://soxebez.ru/wix?keyword=suzuki+eiger+400+service+manual+pdf
    • https://cdn-cms.f-static.net/uploads/4403936/normal_6038369f1e112.pdf
    • https://cdn-cms.f-static.net/uploads/4366004/normal_6032d263b798c.pdf
    • http://newapegujopabi.22web.org/74246782044.pdf
    • https://cdn-cms.f-static.net/uploads/4483103/normal_5fe92f24e88e7.pdf
    • https://cdn-cms.f-static.net/uploads/4370090/normal_602e7759bd64c.pdf
    • https://cdn-cms.f-static.net/uploads/4484632/normal_6036c1b65a3ee.pdf
    • https://static.s123-cdn-static.com/uploads/4445555/normal_5fde5b059a5c2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zarelusipofox/xurirapebuvugu.pdf
    • https://uploads.strikinglycdn.com/files/b5ff59be-4d05-4af8-a550-a0201d48fd57/casio_pcr-t280_cash_register_manual.pdf
    • https://uploads.strikinglycdn.com/files/77e884ac-3234-43f5-970a-168ed0305bb0/the_chrysanthemum_and_the_sword.pdf
    • https://uploads.strikinglycdn.com/files/6484d55e-2458-45bb-b355-89fd540666dc/bosch_dishwasher_not_drying_dishes_well.pdf
    • https://s3.amazonaws.com/nufidibodudulad/glencoe_mcgraw-hill_answer_key_math_grade_6.pdf
    • https://s3.amazonaws.com/jozetej/new_york_state_tax_withholding_worksheet.pdf
    • https://s3.amazonaws.com/gazivemon/ford_mustang_gt_premium_2020_for_sale.pdf
    • https://uploads.strikinglycdn.com/files/940f3584-a0d7-42d6-b020-11c79f25981d/zugawuguxebelo.pdf
    • https://s3.amazonaws.com/xurixado/weather_report_dibrugarh_airport.pdf
    • https://uploads.strikinglycdn.com/files/12f04662-a949-41dd-a7e5-1154d0909082/63684701397.pdf
    • https://uploads.strikinglycdn.com/files/d7f172e7-c731-4f4e-8753-af3a3218e64f/microsoft_project_professional_2019_free_trial_download.pdf
    • http://jubadoloje.epizy.com/adobe_printer_mac.pdf
    • https://uploads.strikinglycdn.com/files/4bdd210c-bf8f-468f-b820-b14bc8e27de0/how_much_does_it_cost_to_service_a_volvo_xc90.pdf
    • https://uploads.strikinglycdn.com/files/c62c877b-3417-4fab-83d6-72fc177bda43/golds_gym_treadmill_410_manual.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_off0000e55e.bin
7b5bb110c2139eadc848fce1abf41b07d31fdd0d67adf7017bbce497af74ba17		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE55E 5980 bytes
font_01_sfnt_off0000f9c5.bin
3a48af5aad99e159ea7c6ac81bac801b54a75a04dce920b78d28b5b00bc206c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C5 10408 bytes

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