Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d2d8fa92558748e…

MALICIOUS

PDF

77.0 KB Created: 2021-03-15 21:30:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5aef1804078d3de1727f633023bc5565 SHA-1: 7494550c21d9253a235f16be25bd43a661bacaff SHA-256: 9d2d8fa92558748e7a55d68d95177f7bc706a6215f6235f31ad78ddb731793c4
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is highly indicative of a phishing attempt. The ML classifier and ClamAV detection further support its malicious nature. The document body, though heavily obfuscated, suggests a lure related to 'test questions and answers', aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/wix?keyword=pa+cdl+test+questions+and+answers
    • http://devgame.design/zoxerivunanunufawabosew1fos1.pdf
    • http://dokukuke.mypressonline.com/stig_severinsen_breatheology.pdf
    • http://prosale.company/baby_bjorn_travel_crib_recall5yuhq.pdf
    • http://potuxoposutu.medianewsonline.com/4111798318.pdf
    • http://zuduwamani.mypressonline.com/what_is_slicing_the_pie.pdf
    • http://vumejopiraxu.mywebcommunity.org/brevet_franais_2020_pondichry.pdf
    • http://tonemisi.medianewsonline.com/head_of_customer_relations_job_description.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bitenozof.atwebpages.com/can_you_take_your_ged_test_online_in_texas.pdf
    • https://5926284e-b61c-4ed0-95e5-27b9feedd2c3.filesusr.com/ugd/50c35f_0e03637babec4199a67442a8618d3d75.pdf?index=true
    • https://uploads.strikinglycdn.com/files/50a2bd34-aeda-4d72-8763-f7a23443f485/91396499617.pdf
    • https://uploads.strikinglycdn.com/files/bdda856b-0c2a-4252-abb9-6c800b9290ca/bofupi.pdf
    • https://3d3b31fc-6152-41c7-b1d4-a4af3afcce63.filesusr.com/ugd/3f8d85_79b10750cb5a4a1a92bb712e2d73b39f.pdf?index=true
    • https://938a05da-450f-421e-a59b-0448473a402a.filesusr.com/ugd/cb5dea_5effe27922e5457185b876c1a47acccf.pdf?index=true
    • https://s3.amazonaws.com/zidosozawok/best_android_tv_browser_2018.pdf
    • http://kalasoziluxolim.myartsonline.com/fojuzepoxizogiz.pdf
    • https://s3.amazonaws.com/tojabixefova/android_studio_tutorial_for_beginners_2018.pdf
    • https://s3.amazonaws.com/povelenavuviw/19560752063.pdf
    • https://s3.amazonaws.com/mejados/70256337514.pdf
    • https://uploads.strikinglycdn.com/files/a20790f5-ef64-4f74-871e-b23a6ce66107/gubevaguzorusesur.pdf
    • https://s3.amazonaws.com/rivazixexuguri/kesojoranaju.pdf
    • https://uploads.strikinglycdn.com/files/924b8510-7846-4a26-a78c-b1c62642d650/sojepudijudebenudipe.pdf
    • http://pakapenabu.atwebpages.com/how_do_you_factory_reset_kindle_fire_when_it_wont_turn_on.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_off0000eee2.bin
0c86a0db0741beeed36bc7e08c90cf4c077c5bd3f95e59522e5a05f39686bf66		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE2 5152 bytes
font_01_sfnt_off00010084.bin
f46ac995c571f26acf8f832cd44fec84daa09609b17bb006394f0073e6d43d82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10084 11368 bytes

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