Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7006d248aa9eaae…

MALICIOUS

PDF

69.6 KB Created: 2021-02-16 06:44:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 627b685550bdc1e06cbe0d703f1efae0 SHA-1: 7322fe442efc7a565f66381a6e161ae3a54928d5 SHA-256: c7006d248aa9eaae907e45cea3af9d7fddf64784bf4988fa61875a326693cae9
156 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, suggesting a link farm or SEO manipulation tactic, with several pointing to unknown or potentially malicious domains. The presence of embedded URLs and the overall structure strongly suggest an attempt to redirect users to malicious sites, likely as part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wix?keyword=the+cosmic+perspective+fundamentals+second+edition+pdf PDF link annotation
    • http://nisiwitas.22web.org/duxenowitomapojetorewip.pdfIn PDF document text
    • http://malarusexomobaf.22web.org/escape_room_answer_level_86.pdfIn PDF document text
    • https://pavofadibap.weebly.com/uploads/1/3/4/3/134370944/a8190d25.pdfIn PDF document text
    • https://voxonevixes.weebly.com/uploads/1/3/4/3/134383310/3349625.pdfIn PDF document text
    • https://tasidumil.weebly.com/uploads/1/3/2/6/132680907/keravan.pdfIn PDF document text
    • https://teraludejos.weebly.com/uploads/1/3/5/3/135304334/4943375.pdfIn PDF document text
    • https://muwikoli.weebly.com/uploads/1/3/2/7/132740525/a56b49f567e4887.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488139/normal_6000a622dabeb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fezenur/14144155170.pdfIn PDF document text
    • http://felepav.epizy.com/64112111609.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/b._e._d_full_form_in_english.pdfIn PDF document text
    • http://bomajada.epizy.com/7564913718.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/onboarding_checklist_template_shrm.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/84114911997.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_off0000d2f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2F1 5404 bytes
SHA-256: e5bc9dc14ac28d181be93ff3f817c139f12db8d3f4839239a8ee126ec4385121
font_01_sfnt_off0000e52d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE52D 10684 bytes
SHA-256: 1ffcad05ea343f141edeb210c2de8031830e03741c03afd2b2543e17b6b9566d

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