Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c40acbc4715ca11…

MALICIOUS

PDF

94.0 KB Created: 2021-05-30 09:16:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 34ea54b28c4bd5d4f5a47b2f1b99e39f SHA-1: e76a14f6ec364882d59631d0a023b015118f2cfc SHA-256: 2c40acbc4715ca1144e06ee5c35322a37213d41782442ca0a670fbb19873b1ad
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a secondary payload or lead the user to a phishing site. The document body's reference to "Roblox hack booga booga" suggests a lure to attract users interested in game cheats or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://ponafet.ru/123?utm_term=roblox+hack+booga+booga PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4423443/normal_5fe06500e9b6b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416154/normal_5fc744fa4b100.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426971/normal_5ff14112421ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403805/normal_606c4d0391f60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483070/normal_5fda4e28a275e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375197/normal_6064d3776b55d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453329/normal_6047e99f4c7e4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373749/normal_5feb8793c0ed2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491151/normal_605dc4e815fc0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476429/normal_602f6b30cef3f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417817/normal_5fcafbb2b1e67.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475999/normal_5ffcbb70844de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450138/normal_5fe6afa693829.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463006/normal_606133508edc9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413119/normal_606633826a373.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/2cc39306-ddc6-4275-9ed3-fb6c16370028/jowuxajoligeketa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12b18e99-1da9-4c19-9bf1-4700cbb0566b/wexemanu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db5ea776-0306-4c5d-99a4-a1fc946512e2/how_to_lose_fat_calorie_deficit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a97228f7-6950-4841-84fb-6d8e66ecce7f/how_to_use_an_old_montgomery_ward_sewing_machine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6e8a829-a5f6-4550-a10a-3e16aa108575/how_many_o2_sensors_does_a_2008_ford_focus_have.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/912abfdf-9054-4fc1-a071-9a4547df3bae/how_to_find_length_given_mass_and_density.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d41d38a-5333-4d55-86b9-3aa0b01cd106/roku_express_3900x_airplay_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e7a309c-5724-436b-9045-cddf1f9c09bc/henry_james_daisy_miller_review.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF4 6440 bytes
SHA-256: 2ce5a7286efefc5aae27ce1c31b3347e159d00bd30cf97f509a0b7f7d49caffb
font_01_sfnt_off0000fdb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDB8 3032 bytes
SHA-256: 9e7ff1cec24ac6e5c9a078bd62472f3eb59cce0b2fdc3ee06528e61bf27f1756
font_02_sfnt_off0001083d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1083D 5068 bytes
SHA-256: a6c9e9b768d9d05a207341da1a5a7daf9ee53bfbff905d9facde639cdbe32dfe
font_03_sfnt_off0001197b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1197B 5064 bytes
SHA-256: 885f3d13807cef6e491d11124b84b41e23bdce52ce7e220c11c119ebf9973071
font_04_sfnt_off00012be2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BE2 10904 bytes
SHA-256: d942ae4274d19747b4ec4454feec6d1976c9d171bc0f790ce2468428e5ce8e8c
font_05_sfnt_off000150f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x150F5 16932 bytes
SHA-256: 16408114fd45ab46c38d7bd0a514c8d35bf312f968f87689f69aa7fc3226d79d

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