Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba4ad106c699408c…

MALICIOUS

PDF

317.7 KB Created: 2021-03-18 06:12:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: b208ed722b711bc49e587447afdd44d9 SHA-1: ebb5a5827484e7501615c3a475544cd5f49e8e35 SHA-256: ba4ad106c699408cbc57509fe270eab565a235214ceecca28e95b2680c7d3d5a
104 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, resalured.ru, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to '9th grade vocabulary words and definitions pdf'. No scripts were extracted, but the presence of malicious indicators suggests it's designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9732

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://resalured.ru/wix?keyword=9th+grade+vocabulary+words+and+definitions+pdf PDF link annotation
    • https://cdn.sqhk.co/luvunugoz/ghagePG/lowes_whirlpool_refrigerators_top_freezer.pdfIn PDF document text
    • https://cdn.sqhk.co/zidodovare/nIKkFih/mini_retro_arcade_machine_game_list.pdfIn PDF document text
    • https://cdn.sqhk.co/noxibogalu/OgiiNQ1/putebopiruxelibajofumud.pdfIn PDF document text
    • https://cdn.sqhk.co/muwazubivotu/fcigcia/movistar_colombia_internet_cambiar_clave_wifi.pdfIn PDF document text
    • https://cdn.sqhk.co/gokarunedod/QbvhfEL/hobby_lobby_store_manager_name.pdfIn PDF document text
    • http://itfamily.pro/calendar_ortodox_pe_stil_vechi_2020uj8k6.pdfIn PDF document text
    • https://cdn.sqhk.co/nazabimon/iiKHdhb/43421890940.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuperik/vjcjjGd/free_project_manager_resume_template_microsoft_word.pdfIn PDF document text
    • http://healsmall.space/xifanugosedevokixefupoxunzdjn2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7ebd5d7-a314-4167-b72c-d24148dd2780/how_to_calculate_interior_and_exterior_angles_of_polygons.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3b3fd8c-5370-4a1d-b00a-cdb3ea55bed8/char_broil_grill_wont_start.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ced48249-4c8c-40dd-afa4-0584c68b4f9f/honda_gcv160_carburetor_repair.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f58aac96-6b1f-4815-9b75-b0fa1fecf101/peep_game_iceberg_slim_quotes.pdfIn PDF document text
    • https://17673d3b-e5d0-4e0e-8211-f079fadf35f5.filesusr.com/ugd/13ae68_7ab67671573940ce900e7bce6ed86872.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9370e04-ce3e-48d7-b1ac-3a6686ff4002/bamixabibifuxopefimuvel.pdfIn PDF document text
    • https://170a7d3c-74f0-42f5-9ead-98ae292a4922.filesusr.com/ugd/a18aa6_dd9caf01c581460fa42df84570727cc1.pdf?index=trueIn PDF document text
    • https://8d928d4c-4e32-4dc6-8093-d383c90b3cca.filesusr.com/ugd/b5d49c_2e1a77ca050c4e24ad1078438e5dec38.pdf?index=trueIn PDF document text
    • https://a44a9d9e-3ce9-422e-9b5d-83ef2d4925cb.filesusr.com/ugd/3234e9_16b04d9a2c2949fb93b68d27aeccd119.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/271345a4-f504-4525-87cf-168432897343/goramugigun.pdfIn PDF document text
    • https://6acf0ca1-aa41-4771-8b91-54baff69ee7f.filesusr.com/ugd/7d1dc9_20c03453dbb84de79a013e78a1510122.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2afbbca4-08e1-4364-b751-1b6e357ae8d3/canon_ds126_291_eos_1100d.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004ae5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AE5B 5872 bytes
SHA-256: 7a05137a2f1d71cd89f7a7f17c21f0d825d96a906ee0892952421ec3b0a92b98
font_01_sfnt_off0004c26c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C26C 10728 bytes
SHA-256: a4e7000a76bdbae4434753f417f04aa1fa98a7ddd3d7b69182e565d12ba71cca

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