Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ea0672de0cc9053…

MALICIOUS

PDF

69.1 KB Created: 2021-01-07 21:16:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 2b016b6bd680e2d2c8a45565a2d4d04a SHA-1: b427c003b65096a04775ab4d8eda588bb30e8e7e SHA-256: 0ea0672de0cc90530f3ea019ba85654d7ec4df594086eca7e2fcfb91237a99c8
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The document body, though heavily obfuscated, contains text related to 'injury report packers', suggesting a lure. The ML classifier and ClamAV detection further confirm the malicious nature of the file, likely used for phishing or to deliver a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/aws?utm_term=injury+report+packers In PDF document text
    • https://cdn.sqhk.co/mujutuzidip/jxidu5J/mezukava.pdfIn PDF document text
    • https://cdn.sqhk.co/daxegajok/qORljak/game_box_art_design.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/nabifovu/pokemon_y_game_for_android_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/dewutexorob/revenue_streams_template.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/60081152002.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eeaaba3f-f3b0-4c51-9123-e270c63b19ca/iv_infiltration_blood_transfusion.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/aha_guidelines_for_sbe_prophylaxis.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/panisosim.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/roblox_games_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25628be0-da0c-42da-85aa-cd6133d89ab9/wow_enchanting_guide_3.3.5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd4a3aa6-1f1c-4c9e-b000-9ba74249b2f1/13786580950.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/arabic_numbers_1-_100_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wolawatin/24364722170.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/rhoma_irama_begadang_1.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_off0000d281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD281 5076 bytes
SHA-256: 95223fd8cd4bc2e94dec4d27fcecefdf9528fbea2f0631007ce32766e5e14b6b
font_01_sfnt_off0000e3e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E5 10500 bytes
SHA-256: 1b7a5185642b2f86996d4c7bd5215d961f27d0505c5cc01d1066ef727b9bc9c5

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