Malicious PDF — malware analysis report

Static analysis result for SHA-256 27f18586767b2715…

MALICIOUS

PDF

77.0 KB Created: 2021-03-28 21:14:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 334f2fab50b06afcd8e0fa78dc1bbd62 SHA-1: db5fde31e72c35437dd97bc4a715481a7a3fcbb4 SHA-256: 27f18586767b2715e29cb7a468e7b16802d7caaddf3c65e4aa5686339d0986e1
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. The ClamAV detection further confirms its malicious nature, specifically flagging it as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to a 'Bionaire steam mop manual pdf'. The presence of multiple external URLs indicates a likely attempt to redirect the user to malicious content or download further payloads.

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://midufefew.ru/award?keyword=bionaire+steam+mop+manual+pdf
    • https://cdn-cms.f-static.net/uploads/4418178/normal_605d689743221.pdf
    • https://cdn-cms.f-static.net/uploads/4420476/normal_605d246f34403.pdf
    • http://muzomabavima.medianewsonline.com/rasabumilisinem.pdf
    • http://zifixoribe.scienceontheweb.net/retinitis_pigmentosa_adalah.pdf
    • http://tafakiduwav.scienceontheweb.net/kinuxedid.pdf
    • https://cdn.sqhk.co/rivotoxupow/ibgjbjj/buxegejasovobufimuni.pdf
    • https://cdn.sqhk.co/xiteduva/ggiasig/8333221201.pdf
    • https://static.s123-cdn-static.com/uploads/4452206/normal_5ff8eab3253a1.pdf
    • https://cdn-cms.f-static.net/uploads/4377116/normal_604b9262d97d0.pdf
    • https://static.s123-cdn-static.com/uploads/4382201/normal_5fd096f04f6af.pdf
    • https://cdn.sqhk.co/degamuwubela/dCgjzGq/ringtones_galaxy_s7_edge_xda.pdf
    • https://cdn.sqhk.co/vufuvevu/YCjcfAt/real_boxing_2_cheats_iphone.pdf
    • https://cdn-cms.f-static.net/uploads/4394079/normal_601b1f890d9e7.pdf
    • https://cdn-cms.f-static.net/uploads/4528959/normal_6023bb22bc5b3.pdf
    • https://cdn.sqhk.co/zikufivol/ihagSge/wudema.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://durenifujogax.myartsonline.com/carpentier_s_reconstructive_valve_surgery_free_download.pdf
    • http://terumalok.atwebpages.com/faringitis_granulosa.pdf
    • https://s3.amazonaws.com/mokixetat/tinupemapogaxuradepos.pdf
    • https://s3.amazonaws.com/buganabowumujef/dabuzixekodopivev.pdf
    • https://s3.amazonaws.com/zerepuzuze/52385781543.pdf
    • https://s3.amazonaws.com/winumigutam/canadian_citizen_application_form.pdf
    • https://s3.amazonaws.com/jimugivos/xijodokadisumebaremajex.pdf
    • https://s3.amazonaws.com/wiwuxot/how_to_connect_bluetooth_controller_to_dolphin_emulator_android.pdf
    • https://s3.amazonaws.com/sajatesawodiji/vitamix_5000_blender_price.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_off0000ef2c.bin
8565f9bddede8cf908b52d0a9b77037eccfe665c009c20455630c5c1fe1df931		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2C 5236 bytes
font_01_sfnt_off000100e1.bin
34e897e0e5698a9db3a1687e17c9baa6d38258ff8ff0d36370ad5d2c5ee0fe93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100E1 11108 bytes

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