Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef2e72d119ea5454…

MALICIOUS

PDF

74.4 KB Created: 2021-03-01 04:05:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 97fcfebea3b57becf0be53f486a666cc SHA-1: a1d548670be7643a1eaf1de012054b1958426bac SHA-256: ef2e72d119ea545486b6cb5a8f3d6f60cac7e3f6ec9d7ae9005bc1ee4efe6028
96 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL and document body suggest a phishing lure, aiming to trick users into downloading a malicious PDF disguised as a search result. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing campaign.

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://kuzutuzo.ru/wb?keyword=the%20art%20of%20tidying%20up%20marie%20kondo%20pdf PDF link annotation
    • http://iciapp.xyz/sansui_tv_customer_care_numbergj7c1.pdfIn PDF document text
    • http://xasedogamif.mypressonline.com/how_to_adjust_the_band_on_a_citizen_watch.pdfIn PDF document text
    • https://cdn.sqhk.co/muwesisokim/fjhsAja/hungry_shark_world_hack_tool_download.pdfIn PDF document text
    • https://ribigitapupag.weebly.com/uploads/1/3/4/8/134887221/nisuxozezeku.pdfIn PDF document text
    • https://cdn.sqhk.co/raxedaninaso/ig0jcie/fufoguwetamu.pdfIn PDF document text
    • http://frankiearvelo.com/6_ft_white_christmas_tree_with_blue_lights0bs0z.pdfIn PDF document text
    • http://paksorond.xyz/muzarokupubefawutodasivijk0mry.pdfIn PDF document text
    • https://nigafabap.weebly.com/uploads/1/3/4/3/134377596/leriwabiporu.pdfIn PDF document text
    • https://boleturem.weebly.com/uploads/1/3/4/3/134398498/5855257.pdfIn PDF document text
    • http://slmit.fun/retipuloxiso77u94.pdfIn PDF document text
    • https://cdn.sqhk.co/gufezitaxato/jcgc4ge/47771867713.pdfIn PDF document text
    • https://womomoko.weebly.com/uploads/1/3/4/8/134848640/nejexizufamexeluf.pdfIn PDF document text
    • https://zugimawaxudal.weebly.com/uploads/1/3/1/4/131410952/36774a0b.pdfIn PDF document text
    • https://rojurunonujimos.weebly.com/uploads/1/3/5/3/135325454/7101544.pdfIn PDF document text
    • https://cdn.sqhk.co/xufojidaju/jghdGii/zombies_disney_online_subtitrat_in_romana_2018.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gonegexunu.myartsonline.com/toshiba_satellite_c850_touchpad_driver_windows_10_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/91488638728.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/46383109219.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/wesuwepo.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/battle_realms_android.pdfIn PDF document text
    • http://rukosivujuxu.atwebpages.com/what_does_castaway_mean_in_biblical_terms.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_off0000e4c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C2 5360 bytes
SHA-256: 81222d503ee599a5d33175a6446a557c1195c9bac0330102ccc079282ade9e9c
font_01_sfnt_off0000f6e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E2 10932 bytes
SHA-256: 77ad0a6329f4b02d769d586ed8fb2b65fe6bae0547ff1a6e1b9d319866434a5e

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