Malicious PDF — malware analysis report

Static analysis result for SHA-256 69ee42701665dd93…

MALICIOUS

PDF

78.3 KB Created: 2021-02-02 23:56:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 0c4d060a1d2a456be6c0b7d91746f336 SHA-1: 2ae534512404b3a16d209f41ff6c55dc814dff13 SHA-256: 69ee42701665dd9322dee2fe4c6f895eea4ba0fad6380c7700703e9b78ee9423
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded URLs, with heuristics indicating it functions as a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://baarspo.ru/aws?utm_term=english+english+telugu+dictionary+pdf PDF link annotation
    • http://nukicew.xyz/iphone_xr_wallpaper_liverpool_fchhtt5.pdfIn PDF document text
    • https://jojeditisiteso.weebly.com/uploads/1/3/1/6/131606373/8306862.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374366/normal_60019b83bc5c7.pdfIn PDF document text
    • http://pubggaming.online/descargar_infinity_pads_para_pc2vra7.pdfIn PDF document text
    • http://fisusuwisefib.22web.org/alkaline_eating_plan.pdfIn PDF document text
    • http://praktika-ingenieur.com/elitech_rc-5_temperature_data_loggerj39uf.pdfIn PDF document text
    • https://sobexezawatu.weebly.com/uploads/1/3/4/9/134903145/pesiko.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445868/normal_5febb02746f2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481164/normal_6011121220b1e.pdfIn PDF document text
    • http://bavewemelemare.iblogger.org/xetipujijexoramixunobol.pdfIn PDF document text
    • https://juwibaviwexufeb.weebly.com/uploads/1/3/0/7/130739975/6435524.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/gewisetug/certification_iso_9001_version_2000.pdfIn PDF document text
    • http://xuxegukazo.rf.gd/clabsi_cdc_guidelines_2018.pdfIn PDF document text
    • http://pepajefosub.epizy.com/bupibefapav.pdfIn PDF document text
    • http://sepotoxofuzeju.epizy.com/android_one_devices_means.pdfIn PDF document text
    • http://lupugavediroz.rf.gd/fuvuxunogumowatevonoge.pdfIn PDF document text
    • http://kijijaxozaro.epizy.com/97514163962.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/hua_bechain_pehli_baar_song_audio.pdfIn PDF document text
    • http://duwimufowewis.epizy.com/hush_puppies_size_guide_australia.pdfIn PDF document text
    • http://vonupov.epizy.com/peter_pan_original_script.pdfIn PDF document text
    • https://s3.amazonaws.com/tokudapele/arrancame_la_vida_libro.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_off0000f2a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A0 5476 bytes
SHA-256: bb26e42c707de18cdfe1604c40768d82ad314fbae3530453a40ad354479fe0c8
font_01_sfnt_off0001054d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1054D 11272 bytes
SHA-256: ab99abbb6433c5f3c6b65c05d9cf8ac1e60de8a08d4499666d8b4ba52eaed54a

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