Malicious PDF — malware analysis report

Static analysis result for SHA-256 497cfcd5c7959345…

MALICIOUS

PDF

71.8 KB Created: 2020-12-18 02:57:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: e762886c765ae583fd9537972006e053 SHA-1: d59dab0750eb0b2e9fbfd824b5e8500e448dbd4d SHA-256: 497cfcd5c795934524d3d8f5ae89aaf6c2a39d84b9af207bdedd199f715c9beb
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are to benign-looking PDF files, but one link points to a suspicious domain 'trafftec.ru'. The ML classifier and ClamAV detection strongly indicate maliciousness, likely related to phishing or a trojan. The document body appears to be malformed or obfuscated, but the presence of numerous external links suggests an attempt to direct the user to malicious content, possibly for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://trafftec.ru/strik?utm_term=smokey+and+the+bandit+part+3+cast PDF link annotation
    • https://rolawopu.weebly.com/uploads/1/3/4/3/134317168/fabanubumebus.pdfIn PDF document text
    • https://voximarabot.weebly.com/uploads/1/3/1/3/131383255/93503b6.pdfIn PDF document text
    • https://kuvofexe.weebly.com/uploads/1/3/1/1/131163751/7d2665a5e7dd46.pdfIn PDF document text
    • https://garegijewavib.weebly.com/uploads/1/3/4/3/134389285/8e5d4791209f.pdfIn PDF document text
    • https://vesumuzuvof.weebly.com/uploads/1/3/4/6/134685641/dawegefuxurifonefan.pdfIn PDF document text
    • https://rigukolanerimi.weebly.com/uploads/1/3/4/5/134519373/gufudipote_bimupukepamitul.pdfIn PDF document text
    • https://mepafuxutare.weebly.com/uploads/1/3/4/6/134660934/sakitivezilike.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc2adf9abaecd33182da937/t/5fcbea949d29b56e4d10c247/1607199380593/wubikezawiwafazibed.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4d8d416f6d44b07d7d45f/t/5fd68465d654060362cd276a/1607894118717/forgot_password_to_unlock_protected_excel_sheet.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f6bd5687f52b6b817d01/t/5fd0c68d2f29925fbb571801/1607517837354/kajaziw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a58ef406-df72-47af-b498-e73995f0c874/nimozi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e8305687f52b6b812c21/t/5fc10e9af3de5e49b589dc57/1606487706801/roblox_unblocked_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc518012e537a05ef24173b/t/5fcbe62885bc3a28a6182a25/1607198249242/xelusefaka.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/blobby_volley_mac.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc53c8cab79f442f245fbca/t/5fcbaf5f33fb14715cc0e992/1607184226174/dining_table_set_for_6.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_off0000d70b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD70B 5856 bytes
SHA-256: 850d76f23708cefaa1292407e7bbe7aa0f69178afbb4e76bad047cc2ce338154
font_01_sfnt_off0000eacd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEACD 11500 bytes
SHA-256: 7a3c336f26c8b3ca0c1ec577078321cfaa3b7ce22b4b01e48911ab724e462aaf

Open this report in the interactive analyzer, or submit your own file for analysis.