Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b9597adfda30304…

MALICIOUS

PDF

75.6 KB Created: 2021-02-15 10:21:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 4f599bf20669cd8b8396c625b2557a3e SHA-1: 32f517c57c03a3e6272bb48b8676c5141b9711dc SHA-256: 9b9597adfda303049ac97fda467f65021cc2e2e256a7e43d7fa0fb85d7b2a92e
126 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous embedded URLs, with one pointing to 'seumenha.ru', suggesting a phishing or malware distribution attempt. The PDF structure and embedded links indicate it's designed to redirect users to potentially harmful external sites.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://seumenha.ru/123?utm_term=modesto+art+museum PDF link annotation
    • http://dulexip.22web.org/vukubupo.pdfIn PDF document text
    • https://supagerafigi.weebly.com/uploads/1/3/0/8/130874211/sibetovamidosovadapi.pdfIn PDF document text
    • http://mklhhhh.space/97938172251apc04.pdfIn PDF document text
    • http://viewcreditscore.info/beauty_and_the_beast_2017_free7blg9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485301/normal_600541f4ee749.pdfIn PDF document text
    • http://kraftmann.su/zotigulinirufozirl2ke.pdfIn PDF document text
    • https://rujupiben.weebly.com/uploads/1/3/4/8/134852491/sufamejerel_fimogesenoj.pdfIn PDF document text
    • http://eglo.club/day_by_day_hymn_sheet_musicwzqi1.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/paxuvagal/balanza_analitica_ohaus_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/47847932207.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/fematenazinemidejufu.pdfIn PDF document text
    • http://vobununebufipu.rf.gd/honorarium_crossword_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/74881223326.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_off0000eae7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE7 4944 bytes
SHA-256: 97767832bcd8804aee55b5cd8b2de5cd1e6ff11240a5b0b4b7c0442fbeccf0f3
font_01_sfnt_off0000fba9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBA9 11376 bytes
SHA-256: d81e014aa3870ec9627351adb8208404ff40d6e630fe665689e69cd88e06be62

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