Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f635b923926767f…

MALICIOUS

PDF

200.7 KB Created: 2021-03-21 04:29:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: d8a7e13b8160a3b2bbf0c3a33eee28b3 SHA-1: e9ae2a477fae0af59e24a7aa4c1d0abefdf5c64c SHA-256: 8f635b923926767fad9ed9c3b1ed2710a12d716c0783db47aec0a5ede4106d8a
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 0.9966

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://maypoin.ru/wix?keyword=the+scarlet+letter+close+reading+worksheet PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4367294/normal_60038ed353305.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376404/normal_603417bd2dd2c.pdfIn PDF document text
    • http://stnold.com/pulaxenilitapimuvexukarxhek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419818/normal_5fd979b7b3fc6.pdfIn PDF document text
    • http://specialsale.info/jared_harrison_hunte1zqfy.pdfIn PDF document text
    • https://muwujexowosis.weebly.com/uploads/1/3/1/4/131437891/fuxizonip.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464082/normal_5ff48250dc96c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415769/normal_5fe6c07810a31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426073/normal_60207b40a9aba.pdfIn PDF document text
    • https://bamegipizof.weebly.com/uploads/1/3/4/6/134647446/26fbb43e96.pdfIn PDF document text
    • https://zikemuwebiwolim.weebly.com/uploads/1/3/5/9/135992964/4f88e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367300/normal_60138f3483205.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/b76112f2-fd45-450e-9953-e2a6a1c374e8/how_to_take_the_top_off_a_whirlpool_cabrio_washing_machine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af75abeb-af70-451a-a653-ede3c83d77c0/what_is_current_caliph_of_islam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93f3f03d-6cc0-4b2a-8d42-a93f7c47b27c/nuwidojumaputusik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7d1f96b-5dc3-4504-b03d-3c2d6ecdea03/1992_mercury_xr6_150_lower_unit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80c6e73f-f671-44f6-b245-6465fe620a73/18359647513.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/853b9ea3-e03c-40a3-8a43-c8a351700b0b/what_is_the_plot_of_tokyo_ghoul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4204688c-ea5a-4c4c-9195-1729e0566ac4/monidogogaxadeka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23f8818c-f8ff-4b51-bb6a-3e69c6814fe2/xuteregizudivobodaganon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26cb6a5c-d41f-49c2-b26a-be1928084e60/a_time_to_kill_sequel.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002d977.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D977 5308 bytes
SHA-256: 6e632dbc222c26da82dcc54e92c86e77b9a64b162fd41d4e164369b96cf8460e
font_01_sfnt_off0002eb8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EB8E 12104 bytes
SHA-256: 48330c38403f4de449886794ae9e7a8fb9bf75155f3e0a9c7ac40267101f947a

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