Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a47eccbb872e632…

MALICIOUS

PDF

68.0 KB Created: 2021-04-02 00:19:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 0640f3cecf0ba5c1b718a4280599f0df SHA-1: 73c720fa4fcacddcded649dae5cc9a6754c5cca7 SHA-256: 6a47eccbb872e63277e8a157438fe7ca7df3b6a91cb1700bf81b64eba54a67e4
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains embedded URLs, one of which is `https://zajinet.ru/wix?keyword=dragon+quest+11+guide+book+english`, suggesting a phishing or malware distribution lure. The document body, though heavily obfuscated, appears to reference the 'Dragon Quest 11 guide book' to entice users. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly suggest a phishing or downloader attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://zajinet.ru/wix?keyword=dragon+quest+11+guide+book+english PDF link annotation
    • http://sanegofelofut.22web.org/el_guardian_invisible_parents_guide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379486/normal_5fcbfaf435be6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375206/normal_600d5109663ee.pdfIn PDF document text
    • http://rigewojugofalas.iblogger.org/advanced_english_grammar_for_high_learner.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381294/normal_5fe58e1f2cd14.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478950/normal_5ffde61d34066.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417662/normal_5fcaed148d335.pdfIn PDF document text
    • http://sivupagelif.iblogger.org/spartan_swing_trading.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4ee984a-b2aa-4619-8401-82d19b042915/lomekowojila.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/aadukalam_video_songs_free_in_3gp.pdfIn PDF document text
    • http://zifelibuvofaz.epizy.com/xaruranemososelariviw.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/33462181053.pdfIn PDF document text
    • http://nodefojabotozij.rf.gd/what_makes_a_good_student_paragraph.pdfIn PDF document text
    • https://s3.amazonaws.com/mevuzokekenojab/vuxukawomiravelewep.pdfIn PDF document text
    • http://tefalim.rf.gd/74064125278.pdfIn PDF document text
    • http://zaleponijodo.epizy.com/cursive_handwriting_sheet_creator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acfba5cb-245b-4231-8851-f206e3ac9aed/xiwolubibel.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/dewatejokuvafemunogoru.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/45414402310.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6e38208-37a5-433b-bf8f-f0e60353c3e3/kenmore_600_series_washer_lint_trap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1641df30-4e7d-4fe5-a2e6-08da2ae80242/ejercicios_de_porcentaje_en_masa_resueltos_3_eso.pdfIn PDF document text
    • http://zanutebuxeboluv.rf.gd/cdsl_demat_statement.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/nozaxezuse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/260b5d58-f933-44b1-84ba-2403a53b65bb/62144670702.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_off0000cd7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD7E 5468 bytes
SHA-256: e55f0528f6fc1422cd47895663fe87dfb74d0a1989e41ee0c3550f2a716f36c2
font_01_sfnt_off0000e00f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE00F 10168 bytes
SHA-256: 31f3d1a51517e3d86546ed745b80755d29093cb6180c961fa1b076baace046e4

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