Malicious PDF — malware analysis report

Static analysis result for SHA-256 f15fd6aeea2a796e…

MALICIOUS

PDF

66.0 KB Created: 2020-12-25 05:42:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 209c2f52e814ee0ff7fa811fc70952b9 SHA-1: 9f536d24939dd4655ce0872be176f8a1df746120 SHA-256: f15fd6aeea2a796e44ed818a93b1e94d69830af47860a3a9331421a45c53b76c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF containing an embedded URL that points to a suspicious domain, flagged by heuristics as an external URI and by ClamAV as a phishing trojan. The ML classifier also strongly indicated maliciousness. The embedded URL is the primary indicator of malicious intent, likely serving as a lure for a phishing attack or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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=amc12+2020+date PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4490140/normal_5fc9f746eb1b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387581/normal_5fc255d09c93d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485702/normal_5fbad41e5e3dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476140/normal_5fbc010ea91cf.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/3a5367c9-6397-4783-aa0a-565839391fcd/52235647509.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff3fbc89-326b-483b-8084-f0cb6cc7cf57/stations_of_the_cross_script.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9319e7ed-b19d-496d-8ffb-25daa9b26316/disable_sip_alg_palo_alto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22667eec-bb67-4377-ace4-0970464597e1/clean_slate_cookbook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/320032f3-4306-4b91-90a1-61df00ca7194/top_body_menu_fichier.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df09c845-1040-40c4-8734-2e5b1442b7ad/5294256005.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27a8bd89-fe9d-4dbe-9011-49df903d6023/pamijefakudeneguloju.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/10589050305.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/apex_legends_easyanticheat_error.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9db48dfe-85ab-4af5-86b1-3d04230ae84b/16044024356.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/179d4a14-597c-484a-b271-7fec14d8410e/xozipa.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 4

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_off0000c79a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC79A 5092 bytes
SHA-256: f5fa30f761a1c778b74a8aafe753bafc91de76f841e6cceba1689e8ce7a24b62
font_01_sfnt_off0000d8e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8E2 9796 bytes
SHA-256: 861f7cd594161d80ba7de7a03ec3244ad69befa4ed155faee6c3cb2c4da8af33

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