Malicious PDF — malware analysis report

Static analysis result for SHA-256 0419c6e0fe7aaa59…

MALICIOUS

PDF

71.2 KB Created: 2020-12-30 03:45:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 69d9d7a901169e9be4008621c4ddcdd7 SHA-1: 56a1290c0e2d5928b56687790f65d1909d2c7290 SHA-256: 0419c6e0fe7aaa5968c65a7df79f5242558f6a8ce7a9758a85269e5ac2bfc5ac
156 Risk Score

Malware Insights

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

The PDF document contains numerous external links, with one identified as a potential phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the presence of many external links suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution.

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://trafffi.ru/123?utm_term=limits+calculus+worksheet PDF link annotation
    • https://nimitokusewifoj.weebly.com/uploads/1/3/4/6/134647116/xinawudukeregevuna.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472766/normal_5fd89efc8478f.pdfIn PDF document text
    • https://xonarupitowij.weebly.com/uploads/1/3/4/6/134617661/cc0936c99122db.pdfIn PDF document text
    • https://xuxulavadimuxa.weebly.com/uploads/1/3/4/2/134234789/jesudu-gigilusifi-foxujaduwer-mavedavesa.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
    • https://uploads.strikinglycdn.com/files/c250dae8-2b90-4aaf-8997-3150481ef7db/4069755716.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aaa25d66-a099-4240-a70b-f55999089208/osrs_thieving_guide_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/534acea7-efa8-4f08-b26f-ef50b31aefc6/barubabalawopevar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea8d75fc-6c8c-41d0-87b3-5be786e1f355/nidukepeduduwuxidazezifig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa2fa4bc-0d97-49e3-89fa-3edfe73675dc/reflexive_pronouns_english_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8325e364-9fdf-45ee-a748-0142fdd34ccc/tstc_moodle_harlingen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12081f8a-f6c2-4900-a065-c6f460670869/55984981330.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4ad5c88-09f8-4262-92ec-3f744897bb08/kodaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61d7b8bc-21f7-4c55-8074-16d5302a5ae2/bifinovisiwotizanes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df1255c2-4312-434f-89b3-794a6ad188ef/inertia_of_a_hollow_circle.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ccd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCD7 4912 bytes
SHA-256: d2c92bed7f2d30fecf3863190486357e41889e2a43129da6380949648b390473
font_01_sfnt_off0000dd9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD9A 10648 bytes
SHA-256: 4c4e5e98347ca26acf24ed5ddeb7fef7156b263998ba1668ec9ab94e5f0c3cc4
font_02_sfnt_off00010235.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10235 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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