Malicious PDF — malware analysis report

Static analysis result for SHA-256 48d3c5f43d398be5…

MALICIOUS

PDF

68.8 KB Created: 2021-03-22 21:27:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: bdd61b2dbf8daa03ce31409bbc1b1eae SHA-1: 94ba63f9749f2a16cd39723e43c31e69046167ba SHA-256: 48d3c5f43d398be566affcad03f4c6662919a5d5a14435ca8052f17cdda6d483
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and a machine learning classifier. It contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to a 'Dyson upright vacuum manual', indicating a social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://gimoguvi.ru/wix?keyword=dyson+upright+vacuum+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420244/normal_6049ab2de40c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367645/normal_604b2cd8acae4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450516/normal_5fe93fa01bdc6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458827/normal_600e4e3a24798.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413980/normal_604623fbbf9d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408582/normal_6041e0bee1ca1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478928/normal_5fc69e7bac28c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490251/normal_601247e612aad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369187/normal_5feb71352ba1a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382003/normal_5fc6b9e1e738e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450426/normal_5fe40f7c3f01f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379498/normal_603414a391bd7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476011/normal_60158c0f5b237.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392215/normal_603b643248be6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369771/normal_6038695557b4d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6344ca4e-da5d-459a-bb96-41054e04590d/89796958971.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abb226d4-37be-42e6-9398-c8e8de129e61/bafugerurufakakoxomudi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01329a04-91de-4b35-ad7b-b5f11e49c88a/what_are_the_ingredients_in_dunkin_donuts_vanilla_chai.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/65545025435.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/jazez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fab9217-1dc0-498c-b0e9-f4bfc104cf68/90326751592.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/bully_math_3_answers_android.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_off0000d26c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD26C 5508 bytes
SHA-256: 4723d83b8067ecb36621b5dd319d6440e5bb0f4db3968d2777ff69512589be8b
font_01_sfnt_off0000e515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE515 9600 bytes
SHA-256: bab36928ab758747580f66677347b3406bfe909008a4aee1efb2365263ce94d0

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