Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7d0149caa731cc0…

MALICIOUS

PDF

85.9 KB Created: 2021-05-02 05:44:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0ad3cef705613842e431a794a35bc78c SHA-1: 2932fa2f1559ff045ce270f3e7e37c59afc8f6fa SHA-256: f7d0149caa731cc0d1bfca934f67776ee86eee2e72cd7e8c2b63ae8d9f1cb10d
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by heuristics as a potential phishing or malware distribution lure. The ML classifier and ClamAV detection strongly indicate malicious intent. Although the document body is heavily obfuscated, the presence of the external URI and the overall detection scores suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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/strik?utm_term=lexus+rx+350+review+2016
    • http://sefexetewizu.iblogger.org/the_boy_who_harnessed_the_wind_movie_download.pdf
    • https://siwinapevaz.weebly.com/uploads/1/3/4/3/134338690/6438893.pdf
    • http://jakivuxevova.22web.org/xijaradurisutol.pdf
    • https://xugubevowasisof.weebly.com/uploads/1/3/4/8/134885616/8814889.pdf
    • https://foluxodemebomo.weebly.com/uploads/1/3/0/7/130739593/cbb0cf4a.pdf
    • https://labomozojaxige.weebly.com/uploads/1/3/0/7/130738499/8778476.pdf
    • http://fadopaduwovod.iblogger.org/aiag_fmea_manual_latest_edition.pdf
    • https://fozikubovofow.weebly.com/uploads/1/3/4/8/134897471/3950894.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://valebuwevunav.epizy.com/cleric_d_d_5e_character_sheet.pdf
    • https://2e6726a7-2e78-456a-9fa1-8bc85c3b20a6.filesusr.com/ugd/76e31d_5075d9b41a464aa2bb2cfdcb1fe7866b.pdf?index=true
    • https://uploads.strikinglycdn.com/files/1655d2f2-b9d9-4dfb-84b1-c6f30ca0ebcd/11167145984.pdf
    • https://s3.amazonaws.com/zulezov/14728147155.pdf
    • https://s3.amazonaws.com/rexogeguxosix/rimajipodatonumijo.pdf
    • https://uploads.strikinglycdn.com/files/ef7acd27-8d0c-40c9-8c21-98b1592f8c06/wuvamafalojulefekoxi.pdf
    • https://uploads.strikinglycdn.com/files/2b023d8f-f4fb-4483-ba15-91a6a5469de9/3_mousquetaires_film_1993.pdf
    • http://peburameg.epizy.com/pokikuwa.pdf
    • http://xirokigekokumar.rf.gd/werebolawijeseka.pdf
    • https://uploads.strikinglycdn.com/files/9941ad84-a7df-48ac-8515-19df0188425f/como_domar_un_oso_polar_en_minecraft.pdf
    • https://s3.amazonaws.com/liwara/test_de_temperamento_psicologia.pdf
    • https://uploads.strikinglycdn.com/files/032d125c-733e-409e-b00a-b249a318a267/94406338933.pdf
    • https://s3.amazonaws.com/tesasubawalozan/wuzosobuguvunako.pdf
    • http://rasunafosav.epizy.com/luvuvokopebomemuxuz.pdf
    • http://vepatafuruxav.epizy.com/ralotekusokiwikawu.pdf
    • https://03aaa7dd-6608-466c-a68c-f41c59811c05.filesusr.com/ugd/ae15ca_011db41715564468907bd397b9d4d74c.pdf?index=true
    • http://gaxubamodenev.epizy.com/bulaklak_ng_maynila.pdf
    • https://s3.amazonaws.com/migivewuwe/anemia_falciforme_alteracion_genetica.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000111a2.bin
c2beb66bde672803375bb824120f2441de31514506ae721493ba6ce5853aff6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111A2 5364 bytes
font_01_sfnt_off0001241c.bin
500cb318e198c2a512b04b1be758b8157a861efd2552e759e2502e5de309aeef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1241C 11160 bytes

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