Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2d4bdb831e5f2dd…

MALICIOUS

PDF

76.5 KB Created: 2021-04-13 08:00:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0ccf0504a6c499a110a02bd92f8a7f05 SHA-1: d93aac2a6e3e9013287f82bb9c1686e9e0e51be1 SHA-256: c2d4bdb831e5f2dd65467b6d101c77f344205a928c6670cc53f8e87ceeb0b799
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URI pointing to a suspicious domain, identified as malicious by ClamAV and an ML classifier. The document body, though heavily obfuscated, suggests a lure related to 'Weber grill at lowes', indicating a phishing or scam attempt. The presence of multiple embedded URLs further supports the malicious intent, likely to redirect users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://botokaw.ru/strik?utm_term=weber+grill+at+lowes
    • https://cdn-cms.f-static.net/uploads/4473903/normal_605565b189590.pdf
    • https://cdn-cms.f-static.net/uploads/4413846/normal_6015f0e6d09b7.pdf
    • https://cdn-cms.f-static.net/uploads/4382771/normal_600cf625b7f68.pdf
    • https://static.s123-cdn-static.com/uploads/4417325/normal_5ff923ef2d62c.pdf
    • https://static.s123-cdn-static.com/uploads/4460723/normal_5fc991a234853.pdf
    • https://cdn-cms.f-static.net/uploads/4460686/normal_604d6cbc97b27.pdf
    • http://gufutaca1.xyz/kyle_dion_hold_on_to_mekarlo.pdf
    • http://youtube-subscribes.com/dulokiserupirun63.pdf
    • http://idealicaitalia-ufficiale.site/is_wealth_tax_good6vc0e.pdf
    • http://www19216801.site/cinematic_storytelling915pd.pdf
    • https://cdn-cms.f-static.net/uploads/4414341/normal_601477dca5ee6.pdf
    • http://thefortykuti.com/are_data_science_masters_worth_itoogwk.pdf
    • https://static.s123-cdn-static.com/uploads/4468259/normal_5fcff47b3c9eb.pdf
    • http://xtrading.buzz/how_to_make_a_line_graph_in_excel_with_one_set_of_datag0bg6.pdf
    • https://static.s123-cdn-static.com/uploads/4383918/normal_60062e0ac5968.pdf
    • http://portkamesto.site/10593939452kelf2.pdf
    • https://cdn-cms.f-static.net/uploads/4411246/normal_6050f168f39e0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/df074542-7a7e-4362-9774-5574f6253d66/what_are_examples_of_sensory_language.pdf
    • https://s3.amazonaws.com/towakog/pamuzumupusodadenagerugi.pdf
    • https://s3.amazonaws.com/nemafu/wamogekemegumovi.pdf
    • https://uploads.strikinglycdn.com/files/2634152e-b85b-46d8-bc7e-97ee0cd3581f/best_book_for_phr_exam.pdf
    • https://uploads.strikinglycdn.com/files/0f2bf21f-2525-4061-8c75-e09276db743e/music_appreciation_final_exam_listening.pdf
    • https://s3.amazonaws.com/jotizifime/91786440764.pdf
    • https://s3.amazonaws.com/sefepugolupalax/acute_otitis_media_guidelines_canada.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e006.bin
39efd3c3f0c9b509ee7e04f36d4e57f422d2785cfafbd288dbcf5ade252c420f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE006 4780 bytes
font_01_sfnt_off0000f073.bin
654556ddddaa56ebe56e4c6df59f78a0c21ee736a297964ed3121ceda88c4b67		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF073 11280 bytes
font_02_sfnt_off000116c8.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x116C8 4324 bytes

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