Malicious PDF — malware analysis report

Static analysis result for SHA-256 d151407741bd66d7…

MALICIOUS

PDF

71.6 KB Created: 2021-03-21 01:28:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be7f5eac3f50bc7c2266ee7c47fc14b0 SHA-1: d168f268f1ea5d6b55b3d1e6fe62e313c3782bb2 SHA-256: d151407741bd66d78eac67cfc6b7d8a33cbd06bda7c8ffb5b80a16695982c418
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains fragments related to product error codes, suggesting a lure to trick users into visiting the malicious URL for supposed support.

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://seumenha.ru/strik?utm_term=paloma+tankless+water+heater+error+code+12
    • http://samoe-samaya.ru/3229049130090nfi.pdf
    • http://halfraire.xyz/medidas_de_polines_de_maderagsp37.pdf
    • http://hd-cam-mirror-up1.club/42526739334nc3d0.pdf
    • http://mekujoviwe.mypressonline.com/how_to_reset_pelonis_space_heater.pdf
    • http://yoga-fitness.space/spiderman_vs_venom_lego_instructionsqv6fx.pdf
    • http://consequences.space/maxims_of_teaching_particular_to_generaleirv5.pdf
    • http://bnl-jobs.com/note_names_treble_clef_quiz_23_answerskpugg.pdf
    • http://characduwe.space/16622622063pa8fi.pdf
    • http://pagavopalubutu.scienceontheweb.net/panutisoxonalonolazotage.pdf
    • http://riwotivadejud.sportsontheweb.net/5311915951.pdf
    • http://characduwe.space/brother_hl_l2360dw_wifi_setupku0gl.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/20252b7f-60ca-4777-98ff-a74dd44ef0b3/motorola_mc9090_user_guide.pdf
    • http://moxosutemow.onlinewebshop.net/will_going_to_present_continuous_exercises_with_answers.pdf
    • https://uploads.strikinglycdn.com/files/758133b7-6293-4745-97c2-e34950ea21d6/first_alert_carbon_monoxide_chirping_5_times.pdf
    • https://uploads.strikinglycdn.com/files/38eccce7-8656-4959-9344-525770528cab/34817420759.pdf
    • https://uploads.strikinglycdn.com/files/880c9b76-81d0-45e6-858c-e21697c0fae9/toyota_yaris_2007_for_sale_olx.pdf
    • http://niselekotoz.myartsonline.com/mujep.pdf
    • https://uploads.strikinglycdn.com/files/e906dfac-0607-4b9c-bfaa-ff216905333f/duxiwabomowijut.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_off0000da29.bin
c2ce11f197279464f7db7d16eb1e744d38f2836c5eee2589bc765f2d83a1c4c6
pdf-font-stream PDF embedded font (sfnt) at offset 0xDA29 5520 bytes
font_01_sfnt_off0000ecd3.bin
69bf3a36296730f5816945f9d5bab0763a83902f40e818f8def04edab0cb6ee8
pdf-font-stream PDF embedded font (sfnt) at offset 0xECD3 10680 bytes