Malicious PDF — malware analysis report

Static analysis result for SHA-256 83b060dd412914e4…

MALICIOUS

PDF

81.0 KB Created: 2021-03-16 03:46:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f0720aacec746f31e867eb099423363 SHA-1: 1c87a4747a6f156481791bdc0798fd771c87474c SHA-256: 83b060dd412914e469ab006ac60082a2c60da32e048bef2d31f2857aee45b88d
96 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with one specifically referencing 'playstation vita emulator apk', suggesting a lure to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the presence of embedded URLs and the overall detection profile point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://zajinet.ru/wix?keyword=playstation+vita+emulator+apk
    • http://ita-yog.space/emergency_treatment_of_hypertension9ejq2.pdf
    • https://cdn.sqhk.co/loganidob/bigkjiH/14579914103.pdf
    • https://cdn.sqhk.co/ketalidukepi/gjhpggC/world_history_topics_after_1500.pdf
    • https://cdn.sqhk.co/reriwoduriju/hha5thh/kesazudejafuwu.pdf
    • https://cdn.sqhk.co/tezizejaropu/jQsPias/gebisojuxijaferedefolo.pdf
    • http://detonic-buy.website/libro_didactica_general_agustin_de_la_herrancq66i.pdf
    • https://cdn.sqhk.co/guwuweri/VMgihzx/rush_truck_center_houston_reviews.pdf
    • https://cdn.sqhk.co/vawikepaf/qhebgjj/57558042455.pdf
    • https://cdn.sqhk.co/xosujopi/jjgAieX/jumpstart_booster_box.pdf
    • https://cdn.sqhk.co/vokalater/h0jcXLg/hungry_birds_menu_manjalpur.pdf
    • http://yachts-4-sale.com/931480407847w7cp.pdf
    • https://cdn.sqhk.co/redodadix/Mhcichh/folidazubewosumedexesupo.pdf
    • http://housefashion.ru/kunawelukorijewefokefi6dk9s.pdf
    • http://premial.su/296461256213dd70.pdf
    • http://help-verification.com/definition_listless_person99xm1.pdf
    • https://cdn.sqhk.co/sozaxejiv/WgejeZC/43004298378.pdf
    • https://cdn.sqhk.co/pininipata/hCsjegh/packers_vs_bears_2019_preview.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off0000fed0.bin
e2dba9bd94c2bfe5b3cb7b8b209b7b8c46fc2067b9a9a9b92e0665372c705876		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFED0 5192 bytes
font_01_sfnt_off00011072.bin
a5aa3b66f10b92dda65caa05feb8d0f2fc7ee7f14770293f6fb4dc7ec15e3e35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11072 11232 bytes

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