Malicious PDF — malware analysis report

Static analysis result for SHA-256 50234a253088cd24…

MALICIOUS

PDF

73.0 KB Created: 2021-03-15 22:32:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 314db0e5b208dc6cec3a070e4fbf7f99 SHA-1: 8021a23cba4d594432e68f87ba349ddc06d058c1 SHA-256: 50234a253088cd2468d9994a16b273d74b6761d0ee3148de74d509a376d44616
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. The presence of embedded URLs, such as 'https://ponafet.ru/wix?keyword=red+rising+pdf+google+drive', suggests that the document is designed to redirect users to potentially harmful websites. The document body, though heavily obfuscated, contains metadata related to its creation, which does not detract from the malicious indicators.

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://ponafet.ru/wix?keyword=red+rising+pdf+google+drive
    • https://jogofevizu.weebly.com/uploads/1/3/4/3/134348232/719eea6c5e9.pdf
    • http://rexonina.medianewsonline.com/organic_chemistry_volume_2.pdf
    • https://sopazamiwurigu.weebly.com/uploads/1/3/4/3/134387891/dosomomad-sidexunawu-fukenu.pdf
    • http://yognat.space/pujizalefezemaf70xv.pdf
    • http://zakewabo.scienceontheweb.net/charge_xbox_360_rechargeable_battery_pack_without_charger.pdf
    • https://cdn-cms.f-static.net/uploads/4408321/normal_602537953ec5c.pdf
    • https://cdn-cms.f-static.net/uploads/4487381/normal_603e480804070.pdf
    • http://teksalle.xyz/what_does_application_period_mean_for_a_girlf3avf.pdf
    • https://cdn.sqhk.co/furugilenu/xjdjgvH/lego_duplo_town_world_animals_10907_building_bricks.pdf
    • https://cdn-cms.f-static.net/uploads/4453906/normal_60159b1a073a7.pdf
    • https://cdn-cms.f-static.net/uploads/4381756/normal_602282b1a6eb4.pdf
    • http://womenalikumat.22web.org/nuzuduvitipatopepa.pdf
    • https://static.s123-cdn-static.com/uploads/4420025/normal_5ff2bbb6296ae.pdf
    • https://busedulaxuxelo.weebly.com/uploads/1/3/1/3/131379622/a7f44e19af6f2.pdf
    • http://viwivomoxori.22web.org/19791392564.pdf
    • http://heleogose.online/27811512769c7pgp.pdf
    • https://wurilulisewanid.weebly.com/uploads/1/3/4/7/134728532/tufasojovesux.pdf
    • https://cdn.sqhk.co/wefekoferu/iroHRrE/orion_starshoot_autoguider_64_bit_drivers.pdf
    • http://italia-doc.space/build_my_life_housefires_lyrics6quow.pdf
    • http://prostotit.site/zoxewvxopy.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pejinubonuxus.epizy.com/android_application_developer_resume_format.pdf
    • http://xupudajiwozov.epizy.com/chicago_electric_tile_saw_46225_parts.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_off0000dc97.bin
23dfccc30ae0f8dd2f66d85ed4b46dce2120346c77dbdf68053efbe982cb265f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC97 5068 bytes
font_01_sfnt_off0000edf4.bin
f70aa9a4c09cd41d9fc74cc17f6ebc8a44e74bf8bf0c54a78bb2a73b547bdcb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF4 11936 bytes

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