Malicious PDF — malware analysis report

Static analysis result for SHA-256 fde1256cbcece362…

MALICIOUS

PDF

77.1 KB Created: 2021-03-08 11:45:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 1ec98a175c9e934a4a0f4c3498d98b71 SHA-1: d0f8208f5ad8e39b3ccb2f26c226bc5eeacd8250 SHA-256: fde1256cbcece362e42eeeebdf585f73293a9d4251dc5a91428ee634008d5ec4
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, with a primary suspicious URL pointing to 'xezojetit.ru', likely serving as a lure for the user to click. The document body, though heavily obfuscated, contains text related to 'Mario flash 3 online' and authoring information, suggesting a social engineering pretext to drive traffic to the malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://xezojetit.ru/wix?keyword=mario+flash+3+online PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4416132/normal_5fcdf4a129e68.pdfIn PDF document text
    • http://lolibixavug.22web.org/nusakujaladizemowuwodoles.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392868/normal_600e577299467.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489251/normal_600d0ae42a7fe.pdfIn PDF document text
    • http://bunewasebawaxig.iblogger.org/final_fantasy_7_remake_xbox_release_date.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lanikudawojag.rf.gd/monitor_asus_vg248qe_manual.pdfIn PDF document text
    • http://dosumomerotep.rf.gd/76749012585.pdfIn PDF document text
    • http://zenejifawulo.epizy.com/champcash_app_apk.pdfIn PDF document text
    • https://f3b8d348-8566-49c9-a9f8-a2c3b9e1bc8e.filesusr.com/ugd/f1c748_98173c7f4f9d47a4874ff68fdfb6435e.pdf?index=trueIn PDF document text
    • http://mufigodukusa.epizy.com/microsoft_wireless_keyboard_2000_lost_usb.pdfIn PDF document text
    • https://e1318bff-d970-45e2-bcea-45481503a18b.filesusr.com/ugd/75a96d_d8af0c4adeba4926b2d8b6b582be31ee.pdf?index=trueIn PDF document text
    • https://538d8494-0c7d-401a-b890-0485f6bc7bca.filesusr.com/ugd/29c71c_01a0ec2501d94cb5b2835ce4ad7e9cf0.pdf?index=trueIn PDF document text
    • https://b4e79a3f-0083-4b26-8056-4fe87fb46dfd.filesusr.com/ugd/332c1b_8853c0737f0441aba3acb7f2efbe7836.pdf?index=trueIn PDF document text
    • http://nerofote.rf.gd/wuzokavilibudidawum.pdfIn PDF document text
    • http://safadixuzet.rf.gd/helena_v8_capillary_electrophoresis.pdfIn PDF document text
    • https://89f68ddc-9f98-4e60-8afa-3e0ca6603e9e.filesusr.com/ugd/4725f1_15b08787c9f94cdab216c0065b015677.pdf?index=trueIn PDF document text
    • http://josuguremim.epizy.com/81287540428.pdfIn PDF document text
    • https://f733e552-90a1-4d1f-83ca-a6b36afcf31c.filesusr.com/ugd/38bf1f_154ff5ba2f8a4cebb6b76e464e921865.pdf?index=trueIn PDF document text
    • https://37e0f79d-b0c1-4727-b76d-5b759c81288f.filesusr.com/ugd/9c66ff_639146477d664366b2b3b94a35b065a8.pdf?index=trueIn PDF document text
    • http://mimiwuzoxul.epizy.com/sondaje_vesical_en_neonatos.pdfIn PDF document text
    • https://089130c0-62ae-4bf1-a93c-656440fe8451.filesusr.com/ugd/738632_af4fe6091bce4a94aa63f6e0f897e1ed.pdf?index=trueIn PDF document text
    • https://99470c7d-c692-4648-a7b8-36ea19db2883.filesusr.com/ugd/ab059d_0814e508fd4248dbbeb13b324ed04b9c.pdf?index=trueIn 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_off0000f1f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1F1 5024 bytes
SHA-256: a214d623435d4b038ab9da5024229dcd67a1740c9fb16292f75978924e6105f6
font_01_sfnt_off0001030f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1030F 10876 bytes
SHA-256: e0e74008b4ed3d126286577db9d7ecfd487ed73ff098e39760bd81d392ed9da8

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