Malicious PDF — malware analysis report

Static analysis result for SHA-256 63809fc3be1e8b63…

MALICIOUS

PDF

74.2 KB Created: 2021-03-22 01:55:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28
MD5: e24588668c7b0ab5b7b223d118101d99 SHA-1: c7f86d22d7f0b4ace3e7eb41d72efd96ed088377 SHA-256: 63809fc3be1e8b63f3b8adffddf71d6e798b0d44fd8470ab5f0199d4f91f8939
96 Risk Score

Malware Insights

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

The file is a PDF document that contains embedded URLs, one of which is a Google feedproxy URL that appears to be a lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the presence of embedded URLs suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://cdn-cms.f-static.net/uploads/4394082/normal_600de1ac895f5.pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4410416/normal_60554d3a829bc.pdfIn PDF document text
    • https://cdn.sqhk.co/dagozuwemep/cVqbTib/24436515789.pdfIn PDF document text
    • https://cdn.sqhk.co/dasadogiso/ejghi8N/30578136017.pdfIn PDF document text
    • https://cdn.sqhk.co/zepipawetopi/9oLjfRc/sagiripevexajana.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366017/normal_60151ccd1c727.pdfIn PDF document text
    • https://cdn.sqhk.co/libuzewis/jJ2Ohe1/14258252869.pdfIn PDF document text
    • https://cdn.sqhk.co/vewimidipiv/jhhijhm/big_bang_evolution_mod_apk_1._1._6.pdfIn PDF document text
    • https://cdn.sqhk.co/zomuzuta/gjvjiQU/fannie_mae_servicing_guide_2014.pdfIn PDF document text
    • https://cdn.sqhk.co/suwixowefa/hjAgchd/nupizijetafi.pdfIn PDF document text
    • http://vepekideku.iblogger.org/dimijemimiv.pdfIn PDF document text
    • https://cdn.sqhk.co/pelopuxi/Jhjhg1b/xirojagonedumuridejamaw.pdfIn PDF document text
    • https://cdn.sqhk.co/gixelotopa/mhfzUzq/48537785508.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/Ecv9gJ3Ok6E/wb?keyword=what%20questions%20to%20ask%20an%20employer%20at%20the%20end%20of%20an%20interviewPDF link annotation
    • https://uploads.strikinglycdn.com/files/bde63b49-5af3-4b05-bf67-8a90e3fa25d7/putar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/162c36a0-77d0-4179-b50f-dd3b3f392b6c/keurig_single_cup_coffee_maker_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1aa27027-b3e3-43b9-a993-975dd01a1d3d/how_to_get_fit_on_a_vegan_diet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d90c5c65-4dec-4825-be36-be75fb8b241f/how_to_reset_rca_tablet_with_keyboard.pdfIn PDF document text
    • http://wepirizifomonij.epizy.com/unity_2d_platformer_tileset.pdfIn PDF document text
    • http://lubuzasoxevixan.epizy.com/oven_sheet_meals.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/faf23616-d11a-4985-bcf7-74114d98bb34/73826137974.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4de126fd-5936-4525-a742-ad7a776e1045/geroban.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f83efbe2-0941-4995-ae9c-4a82a149de66/elder_scrolls_online_new_character_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffb6a260-5c1a-4e94-adfc-43319542aedb/the_dark_tower_2017_review.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_off0000e3b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B2 5740 bytes
SHA-256: 187fa27cd4277ee45cf0837995d8fcdacbb7837cbf5dc3e82577bf6521bdf643
font_01_sfnt_off0000f733.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF733 10712 bytes
SHA-256: 4bbccdd091bf1b32eb32255ae5f00dff1eb93807c406835b4378cb647b704453

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