Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f67cebb5da455f2…

MALICIOUS

PDF

70.6 KB Created: 2021-02-23 15:22:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 04ca697a8acbcd619772634505c955df SHA-1: 6b101c74d1233f67b9ec453def369c919adf30ac SHA-256: 6f67cebb5da455f2c0f66983efc7c410a89b0269f561ba59737f6c65fc51f6cc
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO abuse tactic. The ClamAV detection and ML classifier also indicate malicious intent, specifically flagging it as a phishing trojan. While no scripts were explicitly extracted, the presence of numerous external URLs points towards an attempt to redirect users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wb?keyword=traxxas%20summit%20body%20options PDF link annotation
    • https://widafesisitix.weebly.com/uploads/1/3/5/3/135321065/godasodefa.pdfIn PDF document text
    • http://bupetud.xyz/hornworm_breeding_guidemk89f.pdfIn PDF document text
    • https://morekifozolil.weebly.com/uploads/1/3/4/3/134332894/sonuvujazosu-mutexafilu-xekufav.pdfIn PDF document text
    • https://milafesubori.weebly.com/uploads/1/3/4/7/134745217/vapaju.pdfIn PDF document text
    • http://winoraama.website/bootstrap_admin_template_w3layoutf1i1n.pdfIn PDF document text
    • https://zopojidiluze.weebly.com/uploads/1/3/4/3/134361294/dd0ae85896d.pdfIn PDF document text
    • http://anyita.space/xajonerizi46.pdfIn PDF document text
    • http://tisimewifexumi.iblogger.org/cambridge_o_level_biology_revision_guide.pdfIn PDF document text
    • http://rufowanojona.22web.org/which_roomba_is_best_for_pet_hair.pdfIn PDF document text
    • https://bumewotosebixab.weebly.com/uploads/1/3/5/2/135298585/85d04347.pdfIn PDF document text
    • https://buporinedo.weebly.com/uploads/1/3/4/0/134041533/4c00c47e2d611.pdfIn PDF document text
    • https://kajizifobizixa.weebly.com/uploads/1/3/3/9/133997117/8aef79.pdfIn PDF document text
    • http://daddytestit.xyz/historia_del_electromagnetismo_linea_del_tiempogaem4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383568/normal_5fd2ce2675541.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449205/normal_60031f60dd087.pdfIn PDF document text
    • https://xuwudobuxu.weebly.com/uploads/1/3/2/6/132682441/fesoxaj.pdfIn PDF document text
    • https://lonaxixa.weebly.com/uploads/1/3/1/4/131413275/394473.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/bezegoluzose/ezreal_build_guide_aram.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/balasaheb_vikhe_patil_information.pdfIn PDF document text
    • http://renowuvix.epizy.com/glossary_of_musical_terms.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/assist_synonym_formal.pdfIn PDF document text
    • https://s3.amazonaws.com/jevelel/lagamedurogitado.pdfIn PDF document text
    • http://retetopipazaned.epizy.com/34059354136.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/amex_canada_report_lost_card.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_off0000d508.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD508 5332 bytes
SHA-256: bddf0f089d2adbfb0b864a30a8ab1040be2bc9f464830b89175a69ac69bb6372
font_01_sfnt_off0000e714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE714 11116 bytes
SHA-256: fc23dac498a074a758ffd732bfd3abea1c263e3b7bda7a8bc20eb030b4d1a5f9

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