Malicious PDF — malware analysis report

Static analysis result for SHA-256 f39f781456c17fc0…

MALICIOUS

PDF

81.5 KB Created: 2021-04-28 03:45:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bb5dbc3c762a74a5ee5cbb625d3ff38 SHA-1: 58cdfb6ee26b60848b358af2993b52f8c3fa5c58 SHA-256: f39f781456c17fc072205b1aad92faf6a303fefcfbbc6cc7c357f6e03e40bdc5
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 URL pointing to a suspicious domain, which is likely used to deliver a secondary payload or conduct phishing. The document body, though heavily obfuscated, suggests a lure related to a "Delta q power cord". No scripts were extracted, but the presence of external URIs and the overall detection profile strongly indicate a malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://xezojetit.ru/strik?utm_term=delta+q+power+cord
    • http://odemebayisitrafik.com/hootsuite_social_media_marketing_certification_answerskh5bx.pdf
    • http://allerlo.xyz/viludidupitutuxutilomadv8f0.pdf
    • http://rolivazugatar.scienceontheweb.net/pikiwolimelomuki.pdf
    • http://mobile-media.moscow/lean_management_meaning_in_tamilf34cj.pdf
    • http://gagitevanonuti.mywebcommunity.org/10981804439.pdf
    • http://instacopyrighthelpteam.com/13804518981b2hqn.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a1e75908-e571-41a9-b41f-f223748eb863/mimeriluremukimafiko.pdf
    • http://nununad.myartsonline.com/55851987492.pdf
    • http://wegamaluperetuj.atwebpages.com/wiwirafigovefopinoviluwo.pdf
    • https://7c8f45b7-e058-4e27-bccd-8ee7dcb26900.filesusr.com/ugd/d5cf39_c7264d43690d40ce81e07dcf0fbee6af.pdf?index=true
    • https://1fc3e790-19e1-43b7-bae7-d09a953f51fe.filesusr.com/ugd/2c608b_d627c76ad9ad481f8e506780db929f1a.pdf?index=true
    • https://b7e73dfe-ad35-4791-b4f7-7500f5b7882c.filesusr.com/ugd/bc79a4_8ce3803e38214e008704625648811cd6.pdf?index=true
    • https://uploads.strikinglycdn.com/files/c916f19c-7709-4902-89fb-8dff96494ef0/rocket_engine_combustion_chamber_design.pdf
    • https://s3.amazonaws.com/buxoparadazegu/hp_elitebook_840_g6_notebook_pc_datasheet.pdf
    • https://s3.amazonaws.com/sorapobuk/31015510255.pdf
    • https://s3.amazonaws.com/salosibejodod/2019.pdf
    • https://uploads.strikinglycdn.com/files/2d9fac32-77be-46e9-9688-95593be84d46/45609000281.pdf
    • https://s3.amazonaws.com/juliziwojatige/mdr-zx770bn_android_app.pdf
    • https://01c4c9a3-ee74-4db9-a65d-799443b8dbf1.filesusr.com/ugd/a64c8c_2f959ad6bc494ad980894f688f374b16.pdf?index=true
    • https://uploads.strikinglycdn.com/files/4bce62df-c334-466c-9e48-79bc14e97d81/nizovamiberibovazozenawog.pdf
    • https://uploads.strikinglycdn.com/files/755f0ca8-14f8-434a-9392-7f7a70605bd4/black_baby_girl_shoes_3-6_months.pdf
    • https://b724dda4-e2e0-47c5-811c-ae3b7273578b.filesusr.com/ugd/a1e5ee_eb7d2d9ce8c740a8a721ec6dfee9877a.pdf?index=true
    • http://nodikaduf.onlinewebshop.net/mijowapir.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8e8.bin
e2d0dd8535c001d013cde7f4f16049ab78378340a27154a5c124c1ac279fe953		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E8 5108 bytes
font_01_sfnt_off0000fa6a.bin
c27f01c184f89e5d6cf8e774cc6b86ac6fc00acb02f52b2bc39203c8e61f2b09		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA6A 12468 bytes
font_02_sfnt_off000122e9.bin
532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x122E9 16204 bytes

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