Malicious PDF — malware analysis report

Static analysis result for SHA-256 849d2f947b218aab…

MALICIOUS

PDF

72.1 KB Created: 2020-11-12 19:38:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 551cde9a0f224b16263ca23cae345a81 SHA-1: d96a14831df7f999592916d2b39f55bfc96041e9 SHA-256: 849d2f947b218aab6ecee2514725dae4a3287e8fd6b237c3e2cf5c2636e00b54
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffset.ru/123?utm_term=wireless+home+networking+for+dummies PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421336/normal_5fa1b5b05dad1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418565/normal_5f95ee46824ce.pdfIn PDF document text
    • https://zadavutuni.weebly.com/uploads/1/3/4/3/134343582/jufedivonop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368486/normal_5f9014792dd2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457847/normal_5fa6eaf44750c.pdfIn PDF document text
    • https://misevitazivizux.weebly.com/uploads/1/3/4/3/134376704/131f28a15a4.pdfIn PDF document text
    • https://dusexitope.weebly.com/uploads/1/3/4/6/134646398/9944119.pdfIn PDF document text
    • https://dawerofe.weebly.com/uploads/1/3/4/3/134361643/8b462e852c5a4d.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/0d203d02-94d8-4d04-a718-0d0d70b98ee6/95291188696.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce492c00-7ad3-4ca0-a8e7-e1835009e8c2/rigazezikesupave.pdfIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/three_body_problem_physics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ec48b1a-85d9-48c3-a5ae-c3990e232b47/fesuwadiranopiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3241638f-1a8d-4cac-9bf9-e7505f59f202/find_me_link.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c84beab7-9656-4295-95a2-425d147857ea/39628865523.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/migisixizinadimupuki.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_off0000ddc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC0 5280 bytes
SHA-256: 8e79bd70ede84c73710dd4e67ca273681523d35aa321ef03ac08246bc56e1357
font_01_sfnt_off0000efa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA5 10460 bytes
SHA-256: 205181e1df64f6a23443a8f0a8522c8a11367dae897e0c613ca52345bcbac944

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