Malicious PDF — malware analysis report

Static analysis result for SHA-256 b19dad0b4a746735…

MALICIOUS

PDF

77.5 KB Created: 2021-04-26 13:06:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69dbb98ea53a0316ea899dcf2a03e3de SHA-1: 5e44e71a7cc8e0fc9aebdf344cfb9e333fcbf59d SHA-256: b19dad0b4a746735d635f4695ea80330ae3669ef14e4919a00d66b254e05cc70
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that directs users to a suspicious URL, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of an external URI and the nature of the PDF heuristics suggest an attempt to redirect the user to a malicious site, possibly disguised as a product advertisement.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xezojetit.ru/strik?utm_term=easyacc+power+bank+15000mah
    • http://wemuwetafivaxe.sportsontheweb.net/manufactured_consent.pdf
    • http://idealicaitaly-ufficiale.site/pool_heater_error_code_e05j9k6p.pdf
    • http://viwavidif.getenjoyment.net/kozupizepikuxigizunu.pdf
    • http://xosubowavenu.mypressonline.com/us_open_tennis_2020_draw.pdf
    • https://cdn-cms.f-static.net/uploads/4408707/normal_6011b63ae747c.pdf
    • https://cdn-cms.f-static.net/uploads/4480743/normal_60335c18144db.pdf
    • http://dreabling.online/basic_business_math_word_problems_with_answersn0a4n.pdf
    • http://befigter.xyz/449310070841qaka.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://012a8781-80b6-4d33-8f63-56d56ef93f15.filesusr.com/ugd/6d3794_def8afd57ebe4da796d36e4ea1ff3859.pdf?index=true
    • https://9eaa565e-fb97-40b4-b096-d6760803f699.filesusr.com/ugd/55e2c6_91523fd023774b56b38f18aac2ce0acb.pdf?index=true
    • https://69f6cc44-9198-4e41-bafa-43503dba92bf.filesusr.com/ugd/dec231_1e844565a6be4150b4900b8c89b9a2ad.pdf?index=true
    • https://s3.amazonaws.com/zaxefemebidaz/plt_legend_marker_size.pdf
    • https://063758de-fb2f-4258-809e-b727485bfd5a.filesusr.com/ugd/89cda4_d73f04a0fd1741fc9011c4541b717bcf.pdf?index=true
    • https://46b09160-81f9-4cb3-9cca-f7b5b0c0229e.filesusr.com/ugd/179cc6_63a841bce7084a559e394d1f19f1b522.pdf?index=true
    • https://49432a94-54bc-4d13-9d12-ea41d731e1b8.filesusr.com/ugd/a7c689_92fb22da4c95416ea5b2e4fe3dfda32c.pdf?index=true
    • http://luxupovokajaf.onlinewebshop.net/craftsman_garage_door_manual_release.pdf
    • https://s3.amazonaws.com/pipaneku/lofikenarolubuvukoluteju.pdf
    • http://defakulid.atwebpages.com/alimentao_saudavel_cardapio.pdf
    • https://s3.amazonaws.com/borokegujuzero/flower_garden_pictures_free.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0ba.bin
7956af502cb43d60df1af42f024f3d351e5ea8d6f6f97ead4292cc8f2f46e55f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0BA 3136 bytes
font_01_sfnt_off0000ebe3.bin
b1fd57522f7e032add6a3763b76f3ec851f7e876a5692aff2734d4947288c044		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE3 5816 bytes
font_02_sfnt_off0000ffaa.bin
030da50d9e56b36e063ac05fc1460407bc965df846b1f9f1a7bfa69bb75a7ceb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFAA 11584 bytes

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