Malicious PDF — malware analysis report

Static analysis result for SHA-256 742afdd7f471551b…

MALICIOUS

PDF

79.0 KB Created: 2021-04-13 22:40:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dba3de7c809da0e3ad72e613dd36b21a SHA-1: 7193f13c48ea1afd31ef37c12ef2ef83b0ddb6a3 SHA-256: 742afdd7f471551b7a46214c016b8a18f37f7746cf49c2c746a8ed02ba5c0943
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely used for phishing or to download further payloads. The document body, though heavily obfuscated, suggests a lure related to a 'digital designer job description'. No scripts were extracted, but the presence of embedded URIs and the overall detection profile strongly suggest a phishing or downloader attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://kuzutuzo.ru/strik?utm_term=digital+designer+job+description
    • https://morupataniseb.weebly.com/uploads/1/3/4/5/134502176/xofudenuxaka.pdf
    • https://majotowuwirup.weebly.com/uploads/1/3/5/3/135346036/vavaj.pdf
    • http://lnstagramverifiedbadge-media.com/94284967087gj7l2.pdf
    • http://baugroup.info/97187588692omb2j.pdf
    • http://philonio.online/fexojudidey8rt.pdf
    • http://fabulouss.space/dofokidevibepoxubaked9v4t.pdf
    • http://sosiwawivijomo.scienceontheweb.net/tedozupejozunudimoliluxi.pdf
    • http://flylovel.com/rafanitapogt6icl.pdf
    • http://wumomotetidofe.getenjoyment.net/what_is_literature_review_in_term_paper.pdf
    • https://tetuxexe.weebly.com/uploads/1/3/1/8/131871535/810a7a3e4194ab.pdf
    • http://juluzenaluziwo.22web.org/introduction_to_elliptic_curve_cryptography.pdf
    • https://cdn-cms.f-static.net/uploads/4369330/normal_5fd7c1429ca91.pdf
    • https://cdn-cms.f-static.net/uploads/4372373/normal_604f31fa00582.pdf
    • https://cdn-cms.f-static.net/uploads/4500183/normal_60413f56a21d1.pdf
    • https://static.s123-cdn-static.com/uploads/4371553/normal_5ff9e84c6c16b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/5f8e82e2-c4ea-4e95-a4d2-8abb92579e38/zabefofabefenobovojil.pdf
    • https://uploads.strikinglycdn.com/files/3e1fff0f-c7ed-439a-a5ac-47afd5dc447a/35285208765.pdf
    • http://muviwozusisewer.rf.gd/26178605844.pdf
    • http://bepibatavike.rf.gd/30th_birthday_party_checklist.pdf
    • https://uploads.strikinglycdn.com/files/adcd1022-d137-40f0-a109-31164c01d2da/19243527411.pdf
    • https://uploads.strikinglycdn.com/files/6afb1012-b971-45b5-bc4e-800261603f2c/youre_ugly_too_lorrie_moore_analysis.pdf
    • https://uploads.strikinglycdn.com/files/7833e12b-48b2-48da-9c96-b2c2e926963e/28414700014.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_off0000f54e.bin
8398cba6f8561aa7e07f8fe87d117c97ea6a67dea1e52b3594ff7861bf5b6886		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF54E 5456 bytes
font_01_sfnt_off000107e9.bin
a09af70c4e9a28ce0bc7c6ff433e69136a482c218c4523b824005868f3d7a58f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107E9 11460 bytes

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