Malicious PDF — malware analysis report

Static analysis result for SHA-256 363e5b650d823b4d…

MALICIOUS

PDF

79.5 KB Created: 2020-12-09 05:20:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 11b6f3473ea2192c5555b73dfd350b9e SHA-1: 915f1836acf5bc9bb88f84d30b577f9108fa1114 SHA-256: 363e5b650d823b4d286c781eccc8ef8753c83a6e685b3e27154b8061cd59e2ea
164 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 a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://traffine.ru/strik?utm_term=super+smash+bros+iso+file PDF link annotation
    • https://gonupedifi.weebly.com/uploads/1/3/4/5/134524362/1d6b1408b0.pdfIn PDF document text
    • https://kizekusoviwo.weebly.com/uploads/1/3/1/4/131453028/kipuweb_regedowisiroke.pdfIn PDF document text
    • https://jilukixewe.weebly.com/uploads/1/3/4/0/134042659/488443a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486033/normal_5fbc7ee22b1a9.pdfIn PDF document text
    • https://balesiloruj.weebly.com/uploads/1/3/4/6/134671801/pojumemaguv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/remufuzu/89641098070.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a9c2044-d1e1-4035-bbc2-74fe8842d578/dark_empire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89606603-19b6-402f-ae8b-efb940e460ab/block_outlook_contacts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/faef8bd9-b3fd-49cb-998d-6b424b3edaba/hotel_front_office_training_manual_w.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bf7bdcc-e3a6-4e67-94a7-d8cb0f9d829f/91575371687.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96908423-b7d5-4268-a6b7-916c22ac0bd1/jebufuzixe.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/febaluximokabumesel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3015db1a-9944-4538-ab0d-a53395e663cd/sopudasa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5ad861e-a43c-41e1-a6bf-4e6fb678893c/96925814241.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec7f09ac-db78-4a7d-991f-d45b449fcbaa/human_anatomy_and_physiology_book_for_d_pharmacy.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD6 5384 bytes
SHA-256: 69fc2a6ae4bc1389a871018ec3c54ab884b9b26df2ce2d900a0e80096382f4c8
font_01_sfnt_off0000f1f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1F1 13136 bytes
SHA-256: 56af3c9fe1e395920d314cf8b655db90e07a66ab485ec8314b9b5faf765ed43e
font_02_sfnt_off00011ba2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BA2 16160 bytes
SHA-256: 7e63eb3bed9c4ceaf47e86587cf77a789dba98dd2b4db382f0c7f052a0aeb8ce

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