Malicious PDF — malware analysis report

Static analysis result for SHA-256 092789a0307a6934…

MALICIOUS

PDF

73.0 KB Created: 2021-03-14 02:41:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 503360d960afed4fc8113660c1756e02 SHA-1: bdf77ca1443cacbe74ccfb70171cd0f5671c398c SHA-256: 092789a0307a6934a44fd2a2acc5d246181827caee3f5fbc788dde9cc22a7d07
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF contains an embedded URL that, when clicked, likely leads to the download of a malicious payload. The presence of a 'download button' heuristic further supports this phishing and download lure. ClamAV detection and ML classification confirm the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://seumenha.ru/award?keyword=chopin+barcarolle+pdf
    • https://cdn-cms.f-static.net/uploads/4486200/normal_601d8dae6f704.pdf
    • https://cdn-cms.f-static.net/uploads/4375353/normal_602d92eb77391.pdf
    • http://saxobupazes.sportsontheweb.net/49627086089.pdf
    • https://cdn.sqhk.co/tiwopaperuv/QhfhaQd/83262578104.pdf
    • http://wezotodatixazu.iblogger.org/analogy_test_download.pdf
    • http://tedusoxunola.22web.org/60520184283.pdf
    • https://cdn.sqhk.co/rilabotib/2LPichd/90493215465.pdf
    • https://cdn-cms.f-static.net/uploads/4451231/normal_6031c69cba118.pdf
    • http://mofirixubutibi.getenjoyment.net/59403520184.pdf
    • http://fufejezonodim.mywebcommunity.org/28435120505.pdf
    • https://cdn.sqhk.co/poronujefino/f4S1gjp/download_a_dark_dragon_vip_mod_apk.pdf
    • https://static.s123-cdn-static.com/uploads/4402944/normal_5fe4541b9eb68.pdf
    • https://static.s123-cdn-static.com/uploads/4452171/normal_5ffe439770804.pdf
    • http://pifowovumuwe.medianewsonline.com/blank_map_of_asia_to_label.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/6c38ad12-3f24-4386-9ba8-2d34fc55b7b4/magic_chef_dehydrator_manual.pdf
    • https://uploads.strikinglycdn.com/files/6750309c-5569-4de7-98b1-432e2e55830a/stihl_leaf_blower_starter_rope.pdf
    • https://uploads.strikinglycdn.com/files/4c742604-3b05-4a29-9cb7-657ca207da8d/we_the_kings_sad_song_piano_chords.pdf
    • https://uploads.strikinglycdn.com/files/0048e296-c947-41cd-8b3a-86e71b68cf60/13437952144.pdf
    • https://uploads.strikinglycdn.com/files/9f8de0b9-fce7-4b8d-97b5-5f429009fca5/sunbeam_cool_mist_humidifier_instructions.pdf
    • http://lupuwusi.epizy.com/vekizavovomixa.pdf
    • http://gonefuxirazu.rf.gd/28164730257.pdf
    • http://zoligagomuwe.onlinewebshop.net/positive_affirmations_for_anxiety_audio.pdf
    • http://tifijawubizomed.epizy.com/fiduvipez.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_off0000dfab.bin
86916584f38f12550e4b5dcb63133f9bf33d0398e474c7227960cefdd68df0de		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFAB 5112 bytes
font_01_sfnt_off0000f0fc.bin
3c6c1704c9661d537bf3e442cb222219b0a928d2367a293c15403074e055e6b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0FC 11604 bytes

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