Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5d528a0f592f4d8…

MALICIOUS

PDF

71.7 KB Created: 2021-03-11 02:26:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 12d9d1179205144b9a87f3689f8178c5 SHA-1: 80e81e28a7882d1be2b96100ac9bc9ba5fe42732 SHA-256: d5d528a0f592f4d885513d1b76af185aab1a2b0b0b2f073f24fad6d3abe4d30d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://mezovuduw.ru/wix?keyword=stargirl+study+guide+answers+26-29 PDF link annotation
    • http://telgrm.site/56784238327lbe7i.pdfIn PDF document text
    • http://50offstore.pro/godufavajupafoteruleanp.pdfIn PDF document text
    • http://subfamjtii.site/73274733560igeg5.pdfIn PDF document text
    • http://ukranews.site/karl_marx_selected_writings_summaryzjphy.pdfIn PDF document text
    • http://znohist.site/28189227796bxxoe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f7cac2f2-528f-490f-9bef-cb2448a877de.filesusr.com/ugd/529ba0_7d349a0e2b0e4728a7b4f6f39ac31aa5.pdf?index=trueIn PDF document text
    • https://7404da97-7fcf-4d5f-9d5f-3f8644e6773a.filesusr.com/ugd/35f767_52dbccaa57cb4a7d89bb3dac34f929d7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/27e1477d-8e54-4a95-8ba5-3e9db08c8dc3/doresalugi.pdfIn PDF document text
    • https://f74ea38a-ab8d-49a0-8d31-9a1d7ce64423.filesusr.com/ugd/5ceade_56b925c12bf44b33955b7437144fcfab.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a01a5435-8cda-4fa4-9774-5dbdab97265d/how_to_calm_childs_fear_of_death.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd95d693-bd3c-4337-bc8e-fe6aaad1554f/82458483880.pdfIn PDF document text
    • https://s3.amazonaws.com/sobaketemu/guided_access_for_iphone_xs_max.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/79612945447.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/82518122034.pdfIn PDF document text
    • https://591e60e9-54e8-4b06-a9a7-f2e0522969d0.filesusr.com/ugd/1fd4b7_c386ab13b28b48c58e8676d472dd3f17.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lazolu/jaxudasunisur.pdfIn PDF document text
    • https://be08d7d4-326a-4801-be9d-4496af17a43b.filesusr.com/ugd/d31907_34f5411905574377ac5c5883c5c1f9ba.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pidufozu/software_testing_life_cycle_models.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC1C 5764 bytes
SHA-256: b39f3fc77fe30f8c54a964f53c4f3616efbda8c9ec4ba69c8f7592b61f85cdb9
font_01_sfnt_off0000efda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFDA 10004 bytes
SHA-256: 56052da07832142c4751d0c3bd635b992d28ffe6309eac8187b9ead05304cab6

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