Malicious PDF — malware analysis report

Static analysis result for SHA-256 98fc8cd61de7ea0e…

MALICIOUS

PDF

72.3 KB Created: 2020-11-26 03:35:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 69d314eb7e3d57dba8678169f0202fe2 SHA-1: d170191704bf33d02163ff001f543d459633b0fc SHA-256: 98fc8cd61de7ea0e35da7149880e484ac508694188ace6277677bcfd8a906049
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or malicious intent. The heuristic PDF_SEO_LINK_FARM suggests the document is designed to host a large number of external links, likely for SEO manipulation or to redirect users to malicious sites. One such external URL, 'https://trafffi.ru/strik?utm_term=pop+up+laundry+hamper', is present in the extracted evidence, supporting the attack pattern.

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://trafffi.ru/strik?utm_term=pop+up+laundry+hamper PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420756/normal_5fa04608897fa.pdfIn PDF document text
    • https://walupufodurutos.weebly.com/uploads/1/3/4/7/134734499/gumobokugarudofod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384164/normal_5f8d2d97a8add.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375075/normal_5f898569257f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371505/normal_5f8a80d080a15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391909/normal_5fa8a4a3545f4.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/kujesulad/basic_electrical_engineering_vtu.pdfIn PDF document text
    • https://s3.amazonaws.com/jusagi/types_of_data_analysis_methods.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/natitigexejuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82fd6992-c6fc-469a-ad6b-6d53226dd78d/harry_potter_e_a_cC3A2mara_secreta_filme_completo_dublado.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/7597904502.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/979b3dce-b045-4215-978a-356d12baf8f6/practical_magic_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/almogavar_sin_querer_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/50223275044.pdfIn PDF document text
    • https://s3.amazonaws.com/konimowu/123_movies_madea_play.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/39311412224.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/66937491623.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_off0000d459.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD459 2968 bytes
SHA-256: a3409f23d318cb64f50816b13ffa5e4cae8c31e9b9ecf1c6aab81bc325688a60
font_01_sfnt_off0000defe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEFE 5124 bytes
SHA-256: 69a75cc7b95fe72c38e428f6723879171c1514e7bb0f7599fc3c243d1adb3850
font_02_sfnt_off0000f043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF043 10516 bytes
SHA-256: ac6bc1f9942d4c4a01ecee2832b402c7bc2890e3f2da7ae3cf379c79a5d2aee3

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