Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b56803f48f2217e…

MALICIOUS

PDF

60.2 KB Created: 2020-11-21 12:41:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: dc9a7f8eeda2721af7abad4f04d41556 SHA-1: 17342618fa1a661854be765e3a9729f195129695 SHA-256: 5b56803f48f2217e086c67228749b6bf493edede7c43a592ab34ac6ffba69202
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.007 JavaScript

The PDF contains multiple embedded URLs, including a critical redirector link to 'traffmen.ru' and a link farm with 26 external PDF links. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the presence of numerous links points to a lure-based attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • 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.
  • 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://traffmen.ru/123?utm_term=inheritance+gizmo+answer+key In PDF document text
    • https://cdn-cms.f-static.net/uploads/4380525/normal_5fac3a57f1a08.pdfIn PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/jagufarepa.pdfIn PDF document text
    • https://zavamemedu.weebly.com/uploads/1/3/4/3/134305249/2781269.pdfIn PDF document text
    • https://nezejigon.weebly.com/uploads/1/3/4/6/134611081/ec2a7a3a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419423/normal_5fb6792e582d1.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/lekizopiloref/trailer_trash_pedal_board_cases.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/daximurebeguv.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/seahawks_injury_report_vs_rams.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/crossfit_benchmark_wods_spreadsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/83626129672.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/41253036365.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cac4400c-618d-4b5b-b670-f04b06dd1702/directions_to_summerville_sc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3d8d013-2489-4191-93e4-489437a43a6a/13326883527.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ae0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE0F 5424 bytes
SHA-256: 5ae060114d6daafde457dd6becd35c6476aecc538f6c6a47f86a305b7e50ea90
font_01_sfnt_off0000c075.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC075 10520 bytes
SHA-256: 875b98240414bcfe6c699267ec2ab3b4a984ca788e1610d7f81ee9710a43948c

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