Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a4bf45382c547ce…

MALICIOUS

PDF

69.9 KB Created: 2020-11-23 05:39:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 415237b51ce217b2ec0dfd9bb733b08d SHA-1: 8bd4263bddae3e7d85274f43446a5a28111c9a30 SHA-256: 4a4bf45382c547ce1c7e00ab24b91cde774701bf6b2727213799ff4d11158574
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one prominent link pointing to 'trafffe.ru', suggesting a redirection to a malicious site. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or a scam. While no scripts were directly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffe.ru/aws?utm_term=definition+of+religion+by+scholars+pdf PDF link annotation
    • https://pujatimosu.weebly.com/uploads/1/3/2/6/132681823/ponikinasojeke.pdfIn PDF document text
    • https://zevigetadafuwun.weebly.com/uploads/1/3/0/9/130969942/rovakitun.pdfIn PDF document text
    • https://butegipabozu.weebly.com/uploads/1/3/4/2/134235803/kaxewimawizere-wonodufodezi-xumiliseronulo.pdfIn PDF document text
    • https://mifopezuzata.weebly.com/uploads/1/3/4/4/134484464/4594428.pdfIn 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/xisefowu/apple_os_x_server.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/advertising_definition_marketing.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/arne_naess_deep_ecology.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/us_army_song_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/lugizuderi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e8a6206-3c27-4194-a55d-24d4408fa04e/68044188287.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51091d04-c08f-4456-b37e-1dc9da168337/buddha_board_mini.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/lawolofutelotejibo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c63d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC63D 5448 bytes
SHA-256: fdde8fb34fc18a99dbadf7737686fcec43e8b7dc439d358474330d053d86339e
font_01_sfnt_off0000d8c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8C0 10552 bytes
SHA-256: e14f07309dacaddfdcfbc5175da935de6f6a9f4ab8f518477fc1674c63ca034f
font_02_sfnt_off0000fcae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCAE 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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