Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0c3e7c052b80be7…

MALICIOUS

PDF

195.1 KB Created: 2021-03-24 00:23:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 661a22883724da674f2ec5431531dcf2 SHA-1: 22f04a061172661b5583eab6f6258d5f1d6f3bd9 SHA-256: c0c3e7c052b80be79ee0ae70e3782e4a39f22abd12478efbd21cc938165f0b65
136 Risk Score

Malware Insights

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

The file is a PDF document that contains obfuscated text and an embedded URL. Heuristics indicate it's a phishing lure, likely intended to trick users into downloading further malware. The ML classifier strongly flags it as malicious, and ClamAV confirms detection as a phishing trojan. The embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://soxebez.ru/wix?keyword=rexbeti+ultimate-750+paint+sprayer+instructions
    • https://cdn-cms.f-static.net/uploads/4413007/normal_603eb42fd69d5.pdf
    • https://cdn-cms.f-static.net/uploads/4451376/normal_6033ff55b5976.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/7262e916-0774-427e-91c2-049b8b890e69/stronger_than_ever_quotes.pdf
    • https://37523d11-79cf-4eb3-ada4-f05de57c71ee.filesusr.com/ugd/275374_67a39486338f45eaabd550e9d31a4a4e.pdf?index=true
    • https://4dd4a32c-aced-41d2-87e6-7ff9ca8080d7.filesusr.com/ugd/6d6f33_93077e8102f7459aa8f58546ba9c4ec8.pdf?index=true
    • https://29ca30ec-7ad4-487f-8637-d2d67f3a323c.filesusr.com/ugd/10b11f_66f2f1d751dc41c8a269f063d7622d7c.pdf?index=true
    • https://4461694d-a6f7-4a69-895a-ff5ddeb3c622.filesusr.com/ugd/f504fb_15afe3f8164b4e31821fc0ec9ff1f066.pdf?index=true
    • https://uploads.strikinglycdn.com/files/c3b471d6-0bf7-4c60-95c6-ca8bee2bf58a/how_does_the_central_and_peripheral_nervous_system_work_together.pdf
    • https://e966359d-176b-477a-9ad9-c314bea94227.filesusr.com/ugd/fa6f14_f4c4963464d44c10a9e91bf96ecfc65e.pdf?index=true
    • https://uploads.strikinglycdn.com/files/658c7836-04db-49e4-8184-363bb4e39b5d/fiviferiwukigoxot.pdf
    • https://uploads.strikinglycdn.com/files/3f763b00-92c7-4069-b743-241a98944560/77117772631.pdf
    • https://7ec9ed57-df89-401a-953b-45744c150cee.filesusr.com/ugd/6e3131_4591f070891c4db0b72e0882ef984fe4.pdf?index=true
    • https://87deab66-c645-46c6-955a-dbc2758d34a6.filesusr.com/ugd/302fc9_dfcfef4c5ef1486685ad44d3856274b8.pdf?index=true
    • https://uploads.strikinglycdn.com/files/88cdc1ad-835d-4af9-bc77-f6c547910b64/someone_like_you_piano_sheet_music_beginner.pdf
    • https://uploads.strikinglycdn.com/files/2209ab90-44c8-40a5-8d99-0f03aa2f0813/gojamagonuwimomid.pdf
    • https://uploads.strikinglycdn.com/files/8ccfb696-c68d-4639-a6bc-bdc32d2ede20/screwtape_letters_audiobook.pdf
    • https://uploads.strikinglycdn.com/files/4f8e09df-19ef-49a6-a1a3-00d854b3050e/elkay_drinking_fountain_installation.pdf
    • https://c9b0c9dc-51ad-46ec-84b2-dbc26df53712.filesusr.com/ugd/b6f588_53b158b2e5c445ff9ac7a1324dc769ac.pdf?index=true
    • https://uploads.strikinglycdn.com/files/6a86dbd2-70a0-42e7-b7d1-4d788bac35f1/divilofozadijamafa.pdf
    • https://uploads.strikinglycdn.com/files/7962bbc9-7aed-4d19-8cf7-1762544ae47c/vizowejuzoriged.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002bd12.bin
97802897058cb78acda82dab864ff1ac0d43195858ff6561b9aa70698da4865b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD12 5776 bytes
font_01_sfnt_off0002d0c3.bin
407972e044f6d19669c024df50cd410c4a86b2b5481a121e73dabdfcf1410f77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D0C3 13648 bytes

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