Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f4bef917b58b8f5…

MALICIOUS

PDF

74.6 KB Created: 2021-03-25 16:23:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 060bab9cb48a5d791d19e08173e56734 SHA-1: 701abf87ed5e521e50e009f1cba293df95eccb64 SHA-256: 7f4bef917b58b8f5dc2d3e73400a8f769a9cbd3063639d1ff426feaf30f7bc4b
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. The document body contains a URL that appears to be a lure for downloading an APK file. This suggests the PDF is designed to trick users into downloading and potentially executing malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://bologen.ru/wix?keyword=download+cartoon+hd+apk
    • https://cdn-cms.f-static.net/uploads/4495413/normal_5fdbc8562b88e.pdf
    • http://iminn.ru/best_jquery_websites_templatesh8tqx.pdf
    • https://cdn-cms.f-static.net/uploads/4490269/normal_6046bb23f2e0d.pdf
    • http://bestplacefor.rest/cooking_king_boleteskio1o.pdf
    • http://miwuzobi.sportsontheweb.net/genetically_modified_crops_pros_and_cons.pdf
    • http://bibivire.mygamesonline.org/97867582801.pdf
    • http://newoxoxi.mywebcommunity.org/pebapomufozuturuvajanago.pdf
    • http://lusolakidareve.mywebcommunity.org/what_are_inferential_statistics_used_to_estimate.pdf
    • https://static.s123-cdn-static.com/uploads/4393752/normal_5fca5696bbbec.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://abbf68a8-5b21-4996-91be-11266bd273ed.filesusr.com/ugd/9374a7_c8fcf89cfc4c4e2daa1aef3ca0f7a602.pdf?index=true
    • http://fuguzametekobo.myartsonline.com/40363287616.pdf
    • http://wigikel.rf.gd/a_dolls_house_1992_full_movie.pdf
    • http://zavukazena.epizy.com/82642204974.pdf
    • https://uploads.strikinglycdn.com/files/ec64fd0d-163c-40ee-97b0-0a496c9088c6/cuantos_libros_de_juego_de_tronos.pdf
    • https://5fdaa9e0-ad6d-443b-8779-beb8e45026dc.filesusr.com/ugd/05301a_dadb671448dd472cb4d955356835771b.pdf?index=true
    • https://uploads.strikinglycdn.com/files/fd83b806-5ddc-40d0-8b0d-5e98822b8979/how_to_change_time_on_adidas_watch.pdf
    • https://ff9dba89-6132-4485-99c2-ace8a2453124.filesusr.com/ugd/c3f59f_87f7934e9b3f4bf1b87c3ca96659e3d7.pdf?index=true
    • http://nupakavidowux.epizy.com/blanco_brown_the_git_up_song.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e59c.bin
c78a88011e5245ad022220f03509035a57847ad1fde13f906835e15634e616c7
pdf-font-stream PDF embedded font (sfnt) at offset 0xE59C 5136 bytes
font_01_sfnt_off0000f72b.bin
e4806f3d7a75daa588da80379c9c67fd48e49b231a0ad3254fe22b3ad52d5018
pdf-font-stream PDF embedded font (sfnt) at offset 0xF72B 11596 bytes