Malicious PDF — malware analysis report

Static analysis result for SHA-256 a08225e572ee9ff6…

MALICIOUS

PDF

79.4 KB Created: 2021-03-15 08:33:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c1adfc2e6169e46419a893b9beea3ce SHA-1: d1f6c6f981a925c0c7d4c83927f23ade1787cb5f SHA-256: a08225e572ee9ff6eb2fca10eb11cab5a3d15bed502cbd0a504be3a31cb0cb50
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to exploit user interaction for malicious purposes.

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://leonvi.ru/wix?keyword=tipo+de+computadora+con+pantalla+tactil
    • https://cdn-cms.f-static.net/uploads/4454432/normal_601c5b855fcf4.pdf
    • https://purelukanixavaj.weebly.com/uploads/1/3/1/4/131454065/mexumakez_tajetawalumexef_xuwavinaro_palogar.pdf
    • https://cdn.sqhk.co/zopezepazedo/eCjhPgi/wewavafukogis.pdf
    • https://cdn-cms.f-static.net/uploads/4374986/normal_603e51422966c.pdf
    • http://pinegobojefo.getenjoyment.net/sisinupomipugikevumege.pdf
    • https://cdn-cms.f-static.net/uploads/4426955/normal_603b30aa09175.pdf
    • https://cdn-cms.f-static.net/uploads/4484122/normal_6028676668d87.pdf
    • http://birixuxewazotaz.mywebcommunity.org/electrical_and_electronics_engineering_book.pdf
    • https://cdn.sqhk.co/tevosudav/ojhiiLv/ringtones_app_android.pdf
    • https://cdn.sqhk.co/vituxezij/f5VXlER/razejosamejixa.pdf
    • https://wanesutilujat.weebly.com/uploads/1/3/4/8/134868149/winidubiwu.pdf
    • https://cdn.sqhk.co/nujusowidom/gig3zie/46203049428.pdf
    • http://kapovulup.mywebcommunity.org/wpf_tutorial_and_code_samples.pdf
    • https://puvugemamoj.weebly.com/uploads/1/3/0/9/130969199/9495311.pdf
    • https://cdn.sqhk.co/zibojaje/6jdyhe6/23047718916.pdf
    • https://static.s123-cdn-static.com/uploads/4423188/normal_5fef3c7ad3e87.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/3847b0b6-0877-4cbb-894a-0df57fa5bf94/essential_oils_pocket_reference_guide.pdf
    • https://4b5f4e46-8b81-4257-bf39-61fc08ba57b0.filesusr.com/ugd/7ea8bb_d43e523e9afc45418807d523bf280fab.pdf?index=true
    • https://uploads.strikinglycdn.com/files/c96a0eaf-7437-4c81-96e9-3caeae268d9c/how_to_stop_photos_opening_in_paint.pdf
    • http://guseboses.atwebpages.com/how_to_make_a_stolen_car_yours_in_gta.pdf
    • https://uploads.strikinglycdn.com/files/f786e742-ec9c-45a6-899a-be3c29572772/93124916491.pdf
    • https://69f6cc44-9198-4e41-bafa-43503dba92bf.filesusr.com/ugd/dec231_b7317a00537843b1a1c4d66c5d82fe05.pdf?index=true
    • https://01d7ec8a-e38e-4e33-8c76-1be31754498b.filesusr.com/ugd/24d943_1d9e43ed0ea8408ca1cc67cdf7d8a602.pdf?index=true
    • 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_off0000f47e.bin
ea1c13b315bfcc352c041e428e23f3208ee085764f9fb3f8852701da52a4fd60		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF47E 4988 bytes
font_01_sfnt_off0001055b.bin
108a55d7983e640d129578d7af73938241b436cf93dafc42cf3087fccdeabb5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1055B 12372 bytes

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