Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2f9b99df93fc7d0…

MALICIOUS

PDF

70.6 KB Created: 2021-03-12 09:56:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8862e2b608e137537631fc5c924a47da SHA-1: 25c360d5040948a59bf33f788446d57c3ccc412f SHA-256: d2f9b99df93fc7d09017fa2fe12f0ec7a93b1ac4fe6f35eaee6145aeb8168aee
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 URL pointing to a suspicious domain. ClamAV detected it as a phishing trojan, and ML classifiers also flagged it as malicious. The document body, though heavily obfuscated, appears to be a lure related to a specific product, suggesting a phishing attempt to redirect users to the malicious URL for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/strik?utm_term=how+to+adjust+pressure+on+grundfos+mq3-45
    • https://guzovadolo.weebly.com/uploads/1/3/1/6/131606502/tajinumaxugu-gojiwulowupemi.pdf
    • http://amst-watch-v2.club/2000_ford_ranger_xlt_wheel_bolt_pattern0uipn.pdf
    • http://rankingcoach-apps.com/ziratarelifuzo541cx.pdf
    • https://falototadapi.weebly.com/uploads/1/3/3/9/133989324/9455607.pdf
    • http://kosamaritaj.getenjoyment.net/47795886083.pdf
    • http://load-bcp.com/gitufonovomenilax2gtc.pdf
    • http://gachihyper.xyz/32391467608pbwuh.pdf
    • http://csxmoney.info/sch_enrich_your_ielts_vocabulary4xd51.pdf
    • http://mainsale.info/what_kind_of_jobs_for_information_technologyli39k.pdf
    • http://normaa-id.com/how_do_we_study_art21m2t.pdf
    • http://de-bewertung-id-q2e5t23.top/beneficios_de_comer_cebada_perladamzj5m.pdf
    • https://japujavawewiri.weebly.com/uploads/1/3/2/6/132696154/430050.pdf
    • http://1eyvgo.xyz/autocad_2d_and_3d_commands_with_exampleswnp2i.pdf
    • http://torevifij.iblogger.org/baidu_maps_english_apk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/699cd118-f40d-49e0-ab2c-afb25b7b6b2d/latitude_e7450_battery_light_blinking.pdf
    • https://uploads.strikinglycdn.com/files/15e29242-92d6-4de5-b4fd-050c90694ed5/hp_officejet_pro_8620_printhead_failure.pdf
    • https://uploads.strikinglycdn.com/files/4fd772fd-cc7c-41cb-9d1b-00b55e3ef501/technical_communication_download.pdf
    • http://suxudogakol.myartsonline.com/zamutuwiwaxeditudikes.pdf
    • https://uploads.strikinglycdn.com/files/f93cd852-3e42-4c50-aa18-80d4f3c740e3/gemagiru.pdf
    • http://tepopugo.rf.gd/ccie_routing_and_switching_v4._0_configuration_practice_labs.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_off0000d35f.bin
f9181392de9da462e6aeb86bc48c2fe0347677b7e4b7524bb3336249b4faf870
pdf-font-stream PDF embedded font (sfnt) at offset 0xD35F 5992 bytes
font_01_sfnt_off0000e7d9.bin
04a167343e04b0d37f9765760fd170d9e54b459b0c84f017bd36d2b747aa0ffb
pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D9 11136 bytes