Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ec5e361017b6867…

MALICIOUS

PDF

66.1 KB Created: 2020-12-15 10:45:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 7ea78bb36ca2088b139af94acd7a3feb SHA-1: b793cdc6aebea5ae9183c78fac11e945166bfebb SHA-256: 6ec5e361017b68674803151d5688490b3f68ec95b05ddcba5c72da1d19f221ac
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 high likelihood of malicious intent. The heuristic firings suggest it contains a link farm of external PDF links, with the primary malicious URL being https://trafffe.ru/123?utm_term=church+history+timeline+pdf. While no scripts were explicitly extracted, the presence of external links and the overall detection suggest it's designed to redirect users to potentially harmful content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=church+history+timeline+pdf PDF link annotation
    • https://lokixesope.weebly.com/uploads/1/3/1/6/131607163/jidori.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367961/normal_5fa00174b6336.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371265/normal_5f8eb3967c62a.pdfIn PDF document text
    • https://jedapozopimu.weebly.com/uploads/1/3/4/6/134614290/41081.pdfIn PDF document text
    • https://lififotepul.weebly.com/uploads/1/3/4/3/134339298/rudemal_gukupob.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/303ae171-e26c-462a-8b06-10b580bb9475/agape_christian_academy_corsicana_tx.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90c1278a-f95c-455b-903c-8e94c0566750/25741840629.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7925c0b-1886-4678-8a73-ae758460af1a/zudalemafux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bb69047-cb74-4d10-8d08-8030c68d6031/ne_reue_ebay_lment.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/modeling_chocolate_recipe_white.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/wixusa.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_off0000c43f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC43F 5192 bytes
SHA-256: 10ca25336b2ce45011b83f49f8373cbddbe7dd772c1aa5e64348704ca3c69a8a
font_01_sfnt_off0000d5c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5C7 11240 bytes
SHA-256: 6c8b3e7e31a951ece07634e7e7b0347611f6efd2a153a9bd5316958a50a12527

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