Malicious PDF — malware analysis report

Static analysis result for SHA-256 117fbfdd2b0ae00e…

MALICIOUS

PDF

79.8 KB Created: 2021-03-10 06:53:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 112e5f401c36b930dea613124e115f83 SHA-1: f1eb8dc85b5a54cb4ac8760aa8c4ea2ce3e20e57 SHA-256: 117fbfdd2b0ae00e6c0a2b9551c967d211d3c543ae0d340298e448864277a816
244 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF document contains heuristics indicating it is a malicious phishing attempt, including a link farm and instructions to disable security software. The document body, though heavily obfuscated, contains references to 'Gta v update 5 crack v5', suggesting a lure for pirated software. The presence of external URIs and the ClamAV detection further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=gta+v+update+5+%252B+crack+v5+%2527fixed%2527+3dm PDF link annotation
    • http://neojust.ru/duwoxubupavuplistw.pdfIn PDF document text
    • http://reflectionss.space/alejandro_casona_la_barca_sin_pescadors2ih5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://67dc9804-4028-4298-afd7-d431d2c16fe6.filesusr.com/ugd/559c84_971386b82ba74a04ae68a6d5a612d3ea.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/adb6cc15-e2cf-46db-96e7-556053cfb6ba/vezarogejizikedatuka.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/gestational_diabetes_food_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/92834098296.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f8346b8-c814-4714-bda8-006e5e391db8/substance_abuse_relapse_prevention_plan_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/filidabut/pupilutuv.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/56023717501.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af60b21e-54c3-4e35-a84b-1bf8b7df2841/how_to_play_cards_against_humanity_online_via_zoom.pdfIn PDF document text
    • https://s3.amazonaws.com/ponivotigegepub/como_hacer_un_archivo_zip_en_celular.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03cacfaa-2217-4a05-80d6-c8810e52e4fa/lowrance_elite_5_chirp_installation_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/think_of_me_song_phantom_of_the_opera.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7fd2d7b-b4af-4882-b1c6-879a6c177a22/ridulowanepi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b7d8d3d-0550-4f71-a088-fd92b83eb045/best_calligraphy_learning_book.pdfIn PDF document text
    • https://dc273c12-e125-4738-b2e6-b96bc4bd5eb7.filesusr.com/ugd/c8df25_f333cac806254b73ae50f8a9da8f92e7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/548b61ef-2407-46b0-96f5-1f91784fe9a8/harry_potter_and_the_goblet_of_fire_trailer_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49a9298a-a75f-4bbc-a29b-dc20b94a1197/tetuwatemolijeleteniku.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_off0000ee0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE0E 5636 bytes
SHA-256: 6a5313bc2870c29cd42653881b15d83f742990c37fa0f6116f6542663b0ef942
font_01_sfnt_off00010147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10147 15560 bytes
SHA-256: 9320e15afbca674161deba83b44c228dd5284935dbc2e0cd37ce3846cf96ca18