Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce4be0ee6959266c…

MALICIOUS

PDF

76.4 KB Created: 2021-02-25 18:43:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: f909832cac850e26bd06a5b01232e05d SHA-1: 7fef0f8f5a770a3e2d822eb96706370a488f7393 SHA-256: ce4be0ee6959266c198af27afb98c731a2412c85c3f1924ad85ac407d358b2e0
136 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing lure, specifically using an image to redirect users to a malicious URL. The ML classifier and ClamAV detection strongly support its malicious nature. The embedded URL, 'https://druttle.ru/award?keyword=how+to+silence+a+samsung+microwave', is the primary indicator of compromise, likely leading to a phishing or malware distribution site.

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://druttle.ru/award?keyword=how+to+silence+a+samsung+microwave PDF link annotation
    • http://tugrull.com/53811742249dw09e.pdfIn PDF document text
    • http://xijulefabogi.getenjoyment.net/murray_6.5_hp_lawn_mower_spark_plug.pdfIn PDF document text
    • https://cdn.sqhk.co/zikegasenar/SZRmHB5/3d_tuning_mod_unlocked_apk.pdfIn PDF document text
    • http://com-signto6.xyz/16339527708w1f5e.pdfIn PDF document text
    • http://vijexibat.mywebcommunity.org/41810600449.pdfIn PDF document text
    • http://creditactive.info/99048538097kq7l6.pdfIn PDF document text
    • http://awpmode.com/15636842227smchw.pdfIn PDF document text
    • http://fito4ka.xyz/ironite_for_oak_treesf40o3.pdfIn PDF document text
    • http://pigigozoruda.mypressonline.com/rt_ac68u_default_password.pdfIn PDF document text
    • http://jobs-ingenieur.best/97171976411trurc.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/fevobelijogal/pool_car_log_book_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/astro_a50_manual_update.pdfIn PDF document text
    • https://s3.amazonaws.com/sefipa/21666292930.pdfIn PDF document text
    • http://xuvekixofeku.onlinewebshop.net/how_to_buy_original_warcraft_3.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/5672583837.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/ishq_bulaava_video_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/29194152360.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/zafekunevepagasanoguv.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF8C 5232 bytes
SHA-256: c65a40ab5f58fce6b4a0a831a144b457905c4ec258632c0e12d7b4355f006f6b
font_01_sfnt_off0001015a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1015A 10108 bytes
SHA-256: 92e27e94b4bf546c9c311b521feb8274e47e2d57a551ec6366372bf7ed388163

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