Malicious PDF — malware analysis report

Static analysis result for SHA-256 f27d8847db21c05b…

MALICIOUS

PDF

85.2 KB Created: 2021-03-27 10:09:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 490721dd0ef216f2c3c5fb560beccb62 SHA-1: 8156995f934d02eac4c495821b26d888e8866b83 SHA-256: f27d8847db21c05b21697c1dd064427dc0c997b9861b05b6421a84ae311391ac
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 malicious domain, identified by both ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, suggests a lure related to 'furniture desk sets', likely intended to trick users into visiting the malicious URL. No scripts were extracted, but the presence of external URIs and the high confidence detection indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://vilenefex.ru/wix?keyword=furniture+desk+sets
    • http://jirusulixozome.scienceontheweb.net/bill_of_exchange_notes.pdf
    • https://cdn-cms.f-static.net/uploads/4450046/normal_5fd15c4976e77.pdf
    • http://arbitestpark.xyz/18029099345ij5fb.pdf
    • https://cdn-cms.f-static.net/uploads/4427274/normal_60417fa7ed8dc.pdf
    • http://xoxuvajes.mywebcommunity.org/las_mujeres_que_aman_demasiado_resumen.pdf
    • http://maslovauto.ru/aubrey_marcus_open_relationship_field_guide40ncl.pdf
    • http://jipolavex.medianewsonline.com/13892856323.pdf
    • http://copyrightsupportforlnstagram.com/fluke_117_vs_1778og6d.pdf
    • http://itasda.online/5808768344gsdxm.pdf
    • https://cdn-cms.f-static.net/uploads/4460946/normal_600b8fdeddf76.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://jowosos.myartsonline.com/giovanni_boccaccio_dekameron.pdf
    • https://bf808793-8b46-4c54-8b11-319763181fa0.filesusr.com/ugd/0d018b_2563ad6c14134ee79e8d1a091c66d28b.pdf?index=true
    • https://66c7139a-03c0-45fe-98d3-e817d1e01442.filesusr.com/ugd/de2db5_d824ee52ba4246dbaf94fdb20cf6ebcf.pdf?index=true
    • https://uploads.strikinglycdn.com/files/15c7a336-c348-4918-a1e5-958cd24d6fec/new_age_metaphysical_shops_near_me.pdf
    • https://a529afa0-707c-494d-9cee-e9df2360aa12.filesusr.com/ugd/a6e48a_f414ce13cf734470abc21c9bb04523e6.pdf?index=true
    • https://uploads.strikinglycdn.com/files/d4c22159-02e0-400a-9dda-a4af667937a2/83453295363.pdf
    • https://uploads.strikinglycdn.com/files/996833d0-9457-43e5-8e3b-cbd5ec5454d2/nlt_life_application_study_bible_free_download.pdf
    • https://737bf953-b780-43bc-8af0-312ed5328a40.filesusr.com/ugd/017c44_2f239030c432448497a00a4f82da7c5d.pdf?index=true
    • https://uploads.strikinglycdn.com/files/de32f04f-a0ba-4445-b04d-a2ba35ec7ada/nordictrack_exp_1000_troubleshooting.pdf
    • https://2ddc7431-ff91-46e9-9708-195efd6cc195.filesusr.com/ugd/ffe0d3_2f7b519bc27547d0a504dfd9d95a2fab.pdf?index=true
    • https://uploads.strikinglycdn.com/files/fdd92d70-96b9-4d03-acd2-a4f46be3c70b/kung_fury_movies_like.pdf
    • https://2061f665-9309-41a6-981d-137229ee7e60.filesusr.com/ugd/eb2fe6_ac61edad4b0446c8b47d1ad5fb8e8ed6.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001058f.bin
c43427187458c1115666867ff04e391d2b08d72cc9c9bae00dd21b6dafd34def		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1058F 4368 bytes
font_01_sfnt_off00011466.bin
054a556298e7d76639cf09d4f9661fc82b237ee7e8766fab8f3f865b846dc738		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11466 10900 bytes
font_02_sfnt_off000139ba.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x139BA 4324 bytes

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