Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2abc4b7624447fb…

MALICIOUS

PDF

79.8 KB Created: 2021-03-26 00:09:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: f6cba2aec871cf81ff214a5bfb3006ec SHA-1: 1140c2bdbb1bad64a5d343e6d8694fbfebe38d00 SHA-256: d2abc4b7624447fbb7893cc98299343959c2b80c39986eb9b7a632448062c6b2
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are SEO-optimized and point to potentially malicious domains. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous external links suggest an attempt to redirect users to harmful content.

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 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.
  • 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://resalured.ru/aws?utm_term=2010+chevrolet+camaro+ss+price PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4415531/normal_6058059bed574.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450160/normal_600c9c5a9e828.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380545/normal_6007edb82e203.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
    • http://zabezotep.epizy.com/information_technology_project_manager_interview_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/cast_acrylic_sheet_manufacturers_in_china.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/windows_10_update_assistant_versi_terbaru.pdfIn PDF document text
    • http://jekidosokun.epizy.com/lusitixe.pdfIn PDF document text
    • https://0e01c86c-6ad9-43de-bc04-b8819f410213.filesusr.com/ugd/73c254_8ee2085056c04cc594c0f744e59af46f.pdf?index=trueIn PDF document text
    • http://kusuganuxe.epizy.com/moniciones_domingo_xxiv_tiempo_ordinario_ciclo_c.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/guided_and_unguided_media_geeksforgeeks.pdfIn PDF document text
    • http://diverozisutujew.epizy.com/adguard_premium_v2._12._247_final_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/laviziwufixunoragajalotum.pdfIn PDF document text
    • https://a72b158e-cead-41d6-a0b3-8518216316a4.filesusr.com/ugd/35c6e2_c87f68c4d7bc426c87e0e28ad4fb5257.pdf?index=trueIn PDF document text
    • https://3568ea06-17fa-4787-91ae-86b9aa918cbd.filesusr.com/ugd/8ade13_668748b8e16e475491f6438e6a9613fb.pdf?index=trueIn PDF document text
    • https://89d9876f-4e47-4433-ab5b-8da47ae3ae5c.filesusr.com/ugd/37c326_f59c63b88ff54856abcae718d0592415.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vigevot/toriwafoxuvunag.pdfIn PDF document text
    • https://28932ed2-21d9-4123-99cb-fcff0aac4472.filesusr.com/ugd/cc089a_3b32808deed74699a0271dc1b2165e5b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lososimap/wirelitojilewojot.pdfIn PDF document text
    • https://0491f86b-060d-4f4a-be23-b0d01488777f.filesusr.com/ugd/faa7ef_9e90efc49f5d4f43baf36c14da60f1d2.pdf?index=trueIn PDF document text
    • https://27158da8-170d-48ca-a528-b8ced62fe517.filesusr.com/ugd/9fc8c3_fe257e4c66fb41aa96738da00020acc3.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB4F 5148 bytes
SHA-256: 5102a56082ce237ef40fd4c0452aaa6cab7f35e025fdda3586cafb8051df3752
font_01_sfnt_off0000fcc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC9 11524 bytes
SHA-256: f508fd2afe3c1fff91ab38c3e76f27ee8ed55b55d4caf77e2a3e7b7672d5d56a
font_02_sfnt_off0001241a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1241A 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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