Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9c688e3df277aeb…

MALICIOUS

PDF

87.1 KB Created: 2021-02-03 00:02:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 252d8dbcdb2b6ba9d884e8299da8495f SHA-1: 10bcbfe9673b43dedace17d0edf3c739e0c21779 SHA-256: e9c688e3df277aeb8055a7a3a67257087fd5a33d094337165549163cb865594b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a website seemingly related to Bactrian camel information, but the URL itself is suspicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to redirect the user to a malicious site, which is a common phishing tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/aws?utm_term=bactrian+camel+information PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4376382/normal_60086fc1c13c6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375509/normal_5ff7842aa5439.pdfIn PDF document text
    • http://romeital.space/bach_cello_suite_56ph52.pdfIn PDF document text
    • http://ighelpcenter.xyz/199719909059h4jg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496818/normal_5ff48e82ba24a.pdfIn PDF document text
    • http://fridgeservice.ru/gopulila1wrt7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417329/normal_5fe14578608da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369904/normal_6019b932ace2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427097/normal_5fd60cdda998d.pdfIn PDF document text
    • http://lnstagramsupportlives.com/khmer_unicode_keyboard_free_downloadbr3sr.pdfIn PDF document text
    • http://remont-kholodilnikov.website/9049896849iognx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476126/normal_60062216909cf.pdfIn PDF document text
    • http://kismyketio.com/rich_dad_poor_dad_free_downloadzzsr3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zenoridofagokev.epizy.com/84348766600.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/balgeet_free_video_3gp.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/1204069179.pdfIn PDF document text
    • http://nezenomawaza.epizy.com/psd_templates_for_vintage_poster.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/baccano_guns_and_roses_piano_sheet_music.pdfIn PDF document text
    • http://lojupodinitaxug.epizy.com/62437126389.pdfIn PDF document text
    • https://s3.amazonaws.com/jijari/7134774029.pdfIn PDF document text
    • http://zivuneko.epizy.com/wumegetev.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_off000118f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118F8 4900 bytes
SHA-256: 1798391823d073e364c3a6801fc4605fb498c4d203a55ea778be2e1e1222276c
font_01_sfnt_off0001298e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1298E 11004 bytes
SHA-256: c7790f9a4904b4e6461d330094419445263617b521bbbe4fe65cb0ce2da3ed66

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