Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c53790b0566dd8c…

MALICIOUS

PDF

73.1 KB Created: 2021-03-22 15:33:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9191d5830a65b323e3716eff22e4f706 SHA-1: 76bb49f307824a848cd0908c8cfaf59d205736a3 SHA-256: 2c53790b0566dd8ca1829cff6ca99d11244127f50ba70e2c667bf3c48465c557
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL `https://botokaw.ru/wix?keyword=cyber+shot+user+guide` suggests a phishing or malware distribution lure, disguised as a user guide. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs point towards an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://botokaw.ru/wix?keyword=cyber+shot+user+guide
    • https://cdn.sqhk.co/gisatajofo/TfjiEii/free_music_downloads_to_burn_onto_cds.pdf
    • http://instasurprise.online/zig_ziglar_books_in_hindizqigg.pdf
    • https://cdn.sqhk.co/vigesiji/gjjhggi/police_car_driving_simulator_apkpure.pdf
    • http://lnstagramservicecopyrights.com/pixepogunaxorivij9xeo2.pdf
    • http://goodsun.fun/melhores_livros_para_entender_a_historia_do_brasilpadbm.pdf
    • https://cdn.sqhk.co/fujesepulo/bjejgcE/butixitawusuzake.pdf
    • http://runmasten.online/98465618920dwe7t.pdf
    • https://cdn.sqhk.co/wuvexudid/Dyibghd/sim_card_toolkit_apk_download.pdf
    • http://free-at.pro/what_is_bluehost_wordpress_hosting7l9zt.pdf
    • https://cdn.sqhk.co/kixobaza/daig4rL/genero_binario.pdf
    • https://cdn.sqhk.co/zubavagi/ifgcvif/the_real_story_of_halloween_history_channel_documentary.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bededuxotulapil/vetevesegok.pdf
    • https://s3.amazonaws.com/retisovojor/kinukefilawejetumuxebuw.pdf
    • http://viputedijanoxoz.rf.gd/dolejixin.pdf
    • https://s3.amazonaws.com/jamuluvuvava/malaysia_singapore_lonely_planet.pdf
    • https://uploads.strikinglycdn.com/files/f19446a5-3f22-44f2-9632-9c57316f96d1/hp_laserjet_pro_400_m401n_manual.pdf
    • https://uploads.strikinglycdn.com/files/10484d6e-fdf6-48b4-a889-767b89b0abda/the_lady_or_the_tiger_literary_analysis.pdf
    • https://uploads.strikinglycdn.com/files/36478a1d-4c9c-43ea-8236-b7a4ce33e9cf/have_yourself_a_merry_little_christmas_piano_accompaniment_sheet_music.pdf
    • https://uploads.strikinglycdn.com/files/c801b52f-517e-4bd6-81e6-81b33c657a48/36965163432.pdf
    • http://pinavobanokewix.epizy.com/fujuz.pdf
    • http://dipijiz.epizy.com/54738416162.pdf
    • https://uploads.strikinglycdn.com/files/d5f078bd-6814-4af2-8627-714920659af9/62525938450.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_off0000dfe8.bin
661e7a73fe94d51d98bd52e61cc3cdc0221387fb997c93fb70c017aaa56909c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFE8 4992 bytes
font_01_sfnt_off0000f0dc.bin
48f6ff3862470be2eb38d3628c2404049cedd9391dfd66e0ae55266dd73b8017		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0DC 11892 bytes

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