Malicious PDF — malware analysis report

Static analysis result for SHA-256 9015740b979b9025…

MALICIOUS

PDF

93.6 KB Created: 2021-04-03 01:56:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ebcd86df0abe3db04d8f3e143fc585a3 SHA-1: 5b747c4fd8cb3700c3d645c84f5aeb852ef5fd42 SHA-256: 9015740b979b9025066c5a1b2c011c47b0183b3acb039247e0cd932668412222
104 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URI that points to a suspicious domain, likely intended as a lure for a phishing attack. The ML classifier and ClamAV detection strongly indicate maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick the user into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://dafemum.ru/award?keyword=debi+book+pdf+download
    • http://lisolu.org/15247150850zm4d3.pdf
    • http://subbellassecret.com/36516272795i6rta.pdf
    • https://cdn.sqhk.co/pinofizulag/iIkgdhh/54983868947.pdf
    • http://solapp.xyz/jepanaxukoroliliwomonaea8g4.pdf
    • http://thehensleys.org/pifigofododoxumixajeqr6ac.pdf
    • https://cdn.sqhk.co/gobuwovuv/HNjg0hf/sijuxadisefajazifisogubog.pdf
    • http://carluxepaint.site/bowling_performance_in_world_cup_2019l7lhz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fajujiju/veradewu.pdf
    • https://uploads.strikinglycdn.com/files/520fefc9-c0c6-4ffd-8b25-42dcb3463947/75940596886.pdf
    • https://s3.amazonaws.com/vufupu/modern_indian_food_menu.pdf
    • https://uploads.strikinglycdn.com/files/dad6e0fc-3478-4bfe-a684-c626798f7411/15073459745.pdf
    • https://uploads.strikinglycdn.com/files/439d3fb5-617e-434c-aae3-f7b0b8d2a52f/44241895351.pdf
    • https://uploads.strikinglycdn.com/files/675b81aa-b467-4b09-82c0-381e1cc4411d/como_agua_para_chocolate_quotes_in_spanish.pdf
    • https://s3.amazonaws.com/kewakuko/hoover_windtunnel_2_user_manual.pdf
    • https://s3.amazonaws.com/resixexi/elements_of_belief_system_ppt.pdf
    • https://uploads.strikinglycdn.com/files/976738b8-0681-40a7-9b10-f65b67e4ded4/city_of_bones_movies_series.pdf
    • https://s3.amazonaws.com/jowutoneranemuk/71553030142.pdf
    • https://s3.amazonaws.com/takurugilij/linux_grep_regex_cheat_sheet.pdf
    • https://uploads.strikinglycdn.com/files/45803a10-4e3b-412b-a567-4b426922687d/55583886732.pdf
    • https://uploads.strikinglycdn.com/files/8afd2518-8402-464d-bb29-01737f78414b/classic_cars_for_sale_las_vegas_nevada.pdf
    • https://uploads.strikinglycdn.com/files/4694b8bd-4a76-47c4-80ec-572f5b8910ff/27493401510.pdf
    • https://uploads.strikinglycdn.com/files/6cb4cec3-47a2-4412-807c-7834cdee13dc/examples_of_seventh_grade_essays.pdf
    • https://s3.amazonaws.com/metakibeme/azote_formule_electronique.pdf
    • https://uploads.strikinglycdn.com/files/4d0340fd-7b10-47c9-8afa-5c2f18fb3e3c/noco_genius_boost_gb40_not_charging.pdf
    • https://s3.amazonaws.com/gapivegek/chivalry_is_dead_lyrics.pdf
    • https://s3.amazonaws.com/fulazelof/chrome_offline_installer_73.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010298.bin
d7f38b48ac1de6a334d43b856515d915e0f783b596faaa86e7b58d11ac836961		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10298 5056 bytes
font_01_sfnt_off000113f6.bin
2a1d5701b0795da8c06f054dc50944145d398c7420bbfb661747eb1d5dca589c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x113F6 16728 bytes
font_02_sfnt_off000144ae.bin
1935329a7731ba76f1164dd7c7b0ab5b6b93147587897ea14ddad9c75ecb7afb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x144AE 10480 bytes

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