Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddd60adb75afb2a6…

MALICIOUS

PDF

77.6 KB Created: 2021-02-13 16:53:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: c3f34014fd9f1caf28586e02e63562e2 SHA-1: a5ebe5f38bd60e5ab4163042a2a6e786d52a9873 SHA-256: ddd60adb75afb2a692db6ba2a691bd9b94af4cc4c953c05e03e0607c00634dc8
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains numerous embedded URLs pointing to disposable domains, suggesting a link farm or redirection scheme to host malicious content. The document body, though heavily obfuscated, contains keywords related to worksheets and software, indicating a lure to trick users into visiting these sites.

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
  • 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://maypoin.ru/wix?keyword=commas+apostrophes+colons+and+semicolons+worksheets PDF link annotation
    • http://metazoaapc.fun/sygic_gps_navigation_18.1.4_cracked_apkjbcor.pdfIn PDF document text
    • http://sdfafq.info/naruto_shippuden_episode_guide_no_fillers5ceo7.pdfIn PDF document text
    • http://rocketdocs.us/15930032013rwad1.pdfIn PDF document text
    • http://zewenidasi.iblogger.org/abu_zada_song_mr_jatt.pdfIn PDF document text
    • http://jitokinut.iblogger.org/free_word_calendar_templates_2020.pdfIn PDF document text
    • http://tumbaa.space/beach_blanket_bingo_party_themez2m1s.pdfIn PDF document text
    • http://naturmilans.fun/fardeleuse_automatiquera2ih.pdfIn PDF document text
    • http://ctyr.ru/dapamubidspq.pdfIn PDF document text
    • http://alteramaks.world/ib_comparative_study_hl_example7adkz.pdfIn PDF document text
    • https://cdn.sqhk.co/linidivez/hir2nhd/8362549165.pdfIn PDF document text
    • https://cdn.sqhk.co/rejiwosujupa/hfhjKif/2329763691.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dimarujevetuvif.epizy.com/cnbc_oil_reporter.pdfIn PDF document text
    • http://sukoxaji.rf.gd/background_vector_designs_free.pdfIn PDF document text
    • http://wevoxefi.epizy.com/torujifi.pdfIn PDF document text
    • http://ranuvukeguzekiz.epizy.com/baloo_bhaina_font.pdfIn PDF document text
    • http://luwegovufa.epizy.com/hyperlink_text_in_google_sheets.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_off0000f2fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2FC 5376 bytes
SHA-256: 270608661dbae8c8fa43283b9f64fe64ce6d503c175ea0ff861784cfc558c404
font_01_sfnt_off00010520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10520 10536 bytes
SHA-256: 9af20536f874d29bcea358b20a62855f608b3340cc3b7926203cfe468900b904

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