Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5ee26805e2d17be…

MALICIOUS

PDF

88.7 KB Created: 2021-03-18 04:26:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: faea2a6122925855f11b064b25ef73f5 SHA-1: 85f989c02e61959d53d32c0b3c9010ebc7990dd9 SHA-256: b5ee26805e2d17befffab77eb2e8c30747e0e3ea16c1c67053809fb1d7118574
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 0.9996

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://jottigo.ru/strik?utm_term=hp+laserjet+p2055d+printer+firmware+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403689/normal_6047dad667573.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372074/normal_5fcbe30c76d2b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456389/normal_5fcb922d19a37.pdfIn PDF document text
    • https://sigurapefudaji.weebly.com/uploads/1/3/4/5/134576843/fezuluz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485435/normal_603c76102ee27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498992/normal_601f1ed0d7011.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368245/normal_604d47ca17925.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485714/normal_5feb05dbad65a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487903/normal_5ff9b2c8f0170.pdfIn PDF document text
    • https://munulokepopat.weebly.com/uploads/1/3/5/2/135297381/4601803.pdfIn PDF document text
    • https://soxopumejujaru.weebly.com/uploads/1/3/4/1/134108815/kigogojalod_bilik.pdfIn PDF document text
    • http://lesanuzununefa.22web.org/benilanafizapuxuved.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://a7193630-a032-4ee2-b136-33837135b76a.filesusr.com/ugd/fac845_800241e89d594c1792ef3b063123c1ec.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/falejogajir/django_template_tags_in_javascript.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/a._c._a_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/nimidijugotitobinu.pdfIn PDF document text
    • http://dixadenidufudu.epizy.com/rhode_island_false_albacore_report.pdfIn PDF document text
    • https://3c45aaf8-24f3-4cde-9773-cf44a0a970d3.filesusr.com/ugd/ae7d54_a5a0131c1dc8496abf5ad19e60abd57d.pdf?index=trueIn PDF document text
    • https://30f21d72-2b41-4965-a7bc-2abb02bf1ded.filesusr.com/ugd/47e66e_9a0321273f484f44920986ae829caeb6.pdf?index=trueIn PDF document text
    • https://2dc0326d-ac60-47d8-bf46-f2dc9d334570.filesusr.com/ugd/21b4a7_b59f31b4f7784313abd4b77fc14dcea2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/33974560167.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_off00010f83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F83 5500 bytes
SHA-256: 4f213431de5d5750d339238e8486fd4866762f391b3c7fc15fa0b19870cbb042
font_01_sfnt_off0001222e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1222E 10944 bytes
SHA-256: bd962a591ee754a324234bba7789266fbf3404bc4bc28cf508c17d888fd7d06f
font_02_sfnt_off0001474f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1474F 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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