Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7475ad59a475ed4…

MALICIOUS

PDF

91.7 KB Created: 2021-03-12 21:02:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0e2e65ce8b4f24e2c9ce24dfb4d2501e SHA-1: 14cd2b0cf49decbef191b2d46e00bdf94c4cedeb SHA-256: f7475ad59a475ed4399b4e68a3324c64b39335a91515cf48482192a419898f09
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely the primary lure. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, consistent with phishing or malware delivery.

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://dafemum.ru/wix?keyword=batman+arkham+knight+ps4+parents+guide
    • https://static.s123-cdn-static.com/uploads/4368485/normal_5ff00f9a1a423.pdf
    • http://newuwedeza.mypressonline.com/acceptance_and_commitment_therapy_worksheet.pdf
    • https://cdn.sqhk.co/melipetoluf/thhigja/99673625267.pdf
    • https://static.s123-cdn-static.com/uploads/4499329/normal_60046fb4b086b.pdf
    • https://cdn.sqhk.co/nowavutu/diaibhe/descargar_dinosaur_era_african_arena.pdf
    • https://cdn-cms.f-static.net/uploads/4419626/normal_6011e3f55b62d.pdf
    • https://cdn.sqhk.co/mowamukar/vkibXhj/adobe_photoshop_fix_android_4._4._2_download.pdf
    • http://rinujajija.getenjoyment.net/zebofisusejofavewetevu.pdf
    • http://fulokixowo.scienceontheweb.net/92726541836.pdf
    • http://dizititakozazi.mywebcommunity.org/spalding_basketball_system_u-turn_lift_manual.pdf
    • https://cdn.sqhk.co/kawinojos/TsgfUv1/soundtouch_magic_particle_new_live_wallpapers.pdf
    • https://cdn-cms.f-static.net/uploads/4375907/normal_602a2551185f6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zuvovoxigumuz/how_to_connect_plantronics_wo2_headset_to_computer.pdf
    • http://xufoziminep.onlinewebshop.net/63014093806.pdf
    • https://s3.amazonaws.com/midizaxopazeji/vimetalekev.pdf
    • http://wutesejib.onlinewebshop.net/sarcoidosis_treatment_guidelines.pdf
    • https://s3.amazonaws.com/dowesitobuga/calligraphy_for_beginners_worksheets.pdf
    • https://s3.amazonaws.com/farokof/table_topics_ideas_for_virtual_meetings.pdf
    • https://s3.amazonaws.com/tidigudetefumof/nasanogotironakixunivag.pdf
    • https://e86c6366-0652-46cb-9e1f-5633a133dba9.filesusr.com/ugd/510a18_f355bcf402de45b48a24cb8b770f4bc1.pdf?index=true
    • http://kuxoxokazutuv.myartsonline.com/87459351105.pdf
    • https://79d86aa2-23c4-4aa0-a0dc-c16ac59ae55d.filesusr.com/ugd/ecb701_69b949f19d57475d904ece6e5d5dbeb7.pdf?index=true
    • https://f8b2de7a-6012-4721-b8f1-df5267d6bb95.filesusr.com/ugd/8ebb60_eaf88652b0e846699993f60dfc1a86b7.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_off0001285a.bin
af0e0fba58b40d85cdd55c6567d9340988f652401ef019fdfa51ba6c0dde90f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1285A 5544 bytes
font_01_sfnt_off00013b13.bin
7d68087c0d53edc7d431f0f6d1ebec96c68bd6b51f7e2568150c0a1f4bda274a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13B13 11112 bytes

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