Malicious PDF — malware analysis report

Static analysis result for SHA-256 bea2ab7782470a71…

MALICIOUS

PDF

106.2 KB Created: 2020-11-18 13:59:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: df57061a6f4335920da2c06fe699ff08 SHA-1: 986c3d129ea37e71bb6e6b47003afdf3bc67b847 SHA-256: bea2ab7782470a713351645fc80fbd95a8a97e0375ec1c329efbd2c425b18f79
154 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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/strik?utm_term=the+snows+of+kilimanjaro+pdf In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/mijumomub/chota_bheem_title_song_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/tifobuvoxasukafesetata.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/convert_html_to_nodejs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c48f5695-6135-474e-b9de-63e3a81feb12/soxaratuzejomager.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b677af6-4a80-44de-a8f1-f15a604a60b0/kovafazatunov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c37fdf1f-2b85-4a6b-ba23-316e1189427c/51745495275.pdfIn PDF document text
    • https://s3.amazonaws.com/bunobu/the_sword_of_summer_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c081620e-9d18-4c79-bd65-93968766c1b0/vonuzas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f0aef76-8d75-49fe-8cd2-93b3be7c17b3/4385970835.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/vubofujojumivokije.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7c5c3eb-67fd-4d1c-9779-21dcb4fc5261/69969155647.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D6 30684 bytes
SHA-256: 8799ce29556bd8f5ad331b87d8c2152f30fc99406ced9473271f7e7ab47892d4
font_01_sfnt_off000143f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143F6 5168 bytes
SHA-256: e864949d68249137ea304a5f97119b2e168ef3f0eab1d0373d9b82b12d35c400
font_02_sfnt_off0001555f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1555F 10012 bytes
SHA-256: 13ec4aa8f3462fcffb9a0381304b1b24970083f3eec282565840bfef93d0db50
font_03_sfnt_off000177ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x177CE 16132 bytes
SHA-256: d9b012042df5fe8dc074c42eae0f7627b15178249d85eb70dc7afc452d134ec7
font_04_sfnt_off00018cc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18CC5 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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