Malicious PDF — malware analysis report

Static analysis result for SHA-256 03e20bccbebd8bf7…

MALICIOUS

PDF

178.6 KB Created: 2021-02-16 02:21:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 75ea2901f364f03972764d95034f34af SHA-1: f9ebc5c1e3b2b17bb7aabf62ea0cf488a19b0d17 SHA-256: 03e20bccbebd8bf7dade486d5c63267e0c1644b0bfe5da643ad657c414c3c9a5
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely serving as a lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of external URIs and the overall detection profile suggest the document is designed to exploit users by directing them to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/strik?utm_term=how+do+you+wire+a+delco+remy+alternator PDF link annotation
    • https://cdn.sqhk.co/zewesifadeka/NfLp6ih/24985947644.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488116/normal_5fe08d575afe3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490542/normal_5ff920bc7b22c.pdfIn PDF document text
    • https://cdn.sqhk.co/guzorata/ihfjhgi/45269346962.pdfIn PDF document text
    • https://fawurefo.weebly.com/uploads/1/3/4/4/134441885/lorezukinimeg-fefasakakuja-xujesojuwe.pdfIn PDF document text
    • https://cdn.sqhk.co/tozegatopaxu/xWhFjfU/7493452753.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410702/normal_60215bf79cedf.pdfIn PDF document text
    • http://arendagg.xyz/76729570744ks0kn.pdfIn PDF document text
    • https://nuxowodevuj.weebly.com/uploads/1/3/4/6/134609076/lodewij.pdfIn PDF document text
    • https://wegakerovosa.weebly.com/uploads/1/3/0/8/130873826/3cbd22b08eb7f8.pdfIn PDF document text
    • https://cdn.sqhk.co/nedabuke/gfjeijA/hearts_free_card_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/tenokesime/hfJigx9/hello_neighbor_how_to_escape_act_1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456114/normal_5fc7b8b2e2917.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00028123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28123 5064 bytes
SHA-256: 7c531439f862e0647df7a78bfcfe57bddd9ab9fc5903d48e487125ddeebb26f2
font_01_sfnt_off00029258.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29258 12112 bytes
SHA-256: bb06ea94e7544f45c64551aac1073150900db2335f6cfc2916071e7467345a15