Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c4d5bed123522b3…

MALICIOUS

PDF

73.4 KB Created: 2021-03-03 09:59:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 56380fafc1b780783af1717f4ef0c07e SHA-1: 79c7033b8733477c528ca39a403a69c39ede6a14 SHA-256: 8c4d5bed123522b357742cd4598f941b181cedbbb39c7d58b9047c6c39a5bbed
96 Risk Score

Malware Insights

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

The file was detected as malicious by a ClamAV signature and an ML classifier, indicating a high likelihood of malicious intent. It contains an external URI pointing to a suspicious domain, which is a common tactic for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/strik?utm_term=heart+touching+sad+love+story+song PDF link annotation
    • https://cdn.sqhk.co/rowunozimop/Ugfibic/youtube_history_channel_american_civil_war.pdfIn PDF document text
    • http://winoorama.space/ncpcr_full_formi5xyz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370299/normal_600520f3eade0.pdfIn PDF document text
    • https://cdn.sqhk.co/sorubajuzoxe/ohjghD1/nfl_news_and_rumors.pdfIn PDF document text
    • https://cdn.sqhk.co/zikufivol/ghOjhUa/zulefike.pdfIn PDF document text
    • http://copyrightsupportforlnstagram.com/is_fssc_22000_gfsi_recognizedljeka.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473035/normal_5feb0f10db814.pdfIn PDF document text
    • http://shopeuro.pro/5149555483xr08g.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386363/normal_5fedc5a90f06e.pdfIn PDF document text
    • https://cdn.sqhk.co/vefapatape/ogdzq7C/pokemon_heart_gold_e_soulsilver_pokedex.pdfIn PDF document text
    • https://cdn.sqhk.co/mekurapiw/T6mwrhd/24113530806.pdfIn PDF document text
    • https://cdn.sqhk.co/fukonovum/TTEtjg6/83777800338.pdfIn PDF document text
    • https://cdn.sqhk.co/moxibusas/INX2hjl/1295_horizon_drive_fairfield_ca.pdfIn PDF document text
    • http://lnstagramverifycentre.com/23677309215e30e6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393503/normal_5fe0ec3a1f2bf.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/lepefi/android_tv_box_2019.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_off0000e24b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE24B 5324 bytes
SHA-256: c58c60ea96d8f1ea013e94c8c7f217f5f4f3340899e557201bb9a4ecbbcb7aec
font_01_sfnt_off0000f469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF469 10772 bytes
SHA-256: 2fc31d47fe6fab6fc5194705f9141fa767e84640c9d497074bd405e02563fa36

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