Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d00ff4922aacddc…

MALICIOUS

PDF

81.7 KB Created: 2021-03-08 20:46:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 823220d3783d49c44fc066b6a9227995 SHA-1: 287478a55ccc30e5b22f1a2fcf80135bbd5fe760 SHA-256: 9d00ff4922aacddc91ee6cf16c9e7ae8e8034ab8024c05fbd1ed452eed6cd4d9
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as Pdf.Phishing.Trojan. The presence of an embedded URL pointing to 'resalured.ru' strongly suggests a phishing or malware distribution attempt. Although the document body is heavily obfuscated, the heuristic firings and URL indicate a malicious intent to redirect the user to a potentially harmful site.

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://resalured.ru/123?utm_term=bihar+b.+sc+nursing+application+form+2019 PDF link annotation
    • https://cdn.sqhk.co/ziriziwebu/icxiagj/75706373991.pdfIn PDF document text
    • https://cdn.sqhk.co/vufebevefo/bHTCmCX/pac_man_fever_ps2_iso.pdfIn PDF document text
    • https://cdn.sqhk.co/kadefowuvun/Ijciigg/dunk_shot_3d_shoot_and_dunk_offense.pdfIn PDF document text
    • https://cdn.sqhk.co/vakenuda/gShhifP/29731903774.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/tetofamuxulil/38683962134.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/watudixeveg.pdfIn PDF document text
    • https://s3.amazonaws.com/wupuxus/kevamixusifopeladusotesep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/250817ac-9338-4a90-892b-b263c116f245/5.1_channel_home_theater_system_with_dvd_player_by_sylvania.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/sexesuza.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/car_accident_report_nsw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9755d28b-f2b2-482d-b18a-6adf7fb8f5c8/89748653631.pdfIn PDF document text
    • https://s3.amazonaws.com/rolefosiju/25637450158.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/smartsheet_logo_png.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa1727e4-c8ae-49e8-b5cb-6a267dc0ba85/xudebosijurafatododegefe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7a3f283-c6bf-492c-a8e6-f8cef854eb9d/will_there_be_a_season_3_for_big_little_lies.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/bawiwojobugutebaxafowog.pdfIn PDF document text
    • https://s3.amazonaws.com/dikomavomem/consequentialism_and_deontology.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69d42116-7a59-43c0-b7ea-c4cf4e91a68c/sons_and_lovers_summary_litcharts.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/external_style_sheet_css_w3schools.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/video_collage_maker_for_android.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E6 6132 bytes
SHA-256: 0efdac9673e8868d95d39e1c2527855856b9b38acef941204101295f6ab5bad0
font_01_sfnt_off0000fea6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA6 10900 bytes
SHA-256: ab913aae4eae15d9ec92ff337282f0abe2fc8ebf7a928848d5dfa4d0b96b0e4c
font_02_sfnt_off000123fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123FC 16164 bytes
SHA-256: ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8

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