Malicious PDF — malware analysis report

Static analysis result for SHA-256 15ffdb48e8558faf…

MALICIOUS

PDF

68.7 KB Created: 2020-12-24 04:12:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 339a0c8c0023d662fbd1c559ee75ac63 SHA-1: b07c99fb92834fb839c2cf6df87da0aaec064e72 SHA-256: 15ffdb48e8558faf1589c1508e96f06152316229ad54e0eb792227b3d5036a3a
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, with a high severity heuristic indicating it's a password-protected archive lure. The embedded URL points to a suspicious domain, likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to trick users into downloading further malicious content.

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://trafftec.ru/strik?utm_term=ringtone+2019+download+tamil+songs PDF link annotation
    • https://cdn.sqhk.co/berovanova/gf3ggUp/pixel_battle_royale_games.pdfIn PDF document text
    • https://cdn.sqhk.co/kuruwoke/jBzKaje/flip_knife_3d_mod_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426822/normal_5fe01656081de.pdfIn PDF document text
    • https://wexabegolorumad.weebly.com/uploads/1/3/4/3/134351445/d947dd1ef425f.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/8770bb1e-14da-4ecc-9765-9ab7e02598e3/kohler_elongated_toilet_seat_mexican_sand.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32bd8940-4f56-4c64-970f-37571ab0fd5b/white_ski_mask.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a547c5e-2409-46a1-8b8e-df64dc1c4872/does_exercise_help_get_rid_of_cellulite.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0fbbf75-3258-4955-ba34-84b19bc7f7e2/97258240928.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e10ba92-3f6e-4ed0-b118-7ec329bf9876/54668153855.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21284402-1207-42b4-b868-f507a37b4847/52321110502.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/649dc2f0-817e-4a1b-b6a1-095bac0e511c/89027275131.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 6

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_off0000cf4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF4E 5628 bytes
SHA-256: 06d90990053e847a97b19cc33ed0f00ff7133290459546ea9b8f3d4ee135bf75
font_01_sfnt_off0000e288.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE288 10308 bytes
SHA-256: 00c607a20b699a3e39df3e80701bd819f1572bc2d11c43637335eafa8b951d01

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