Malicious PDF — malware analysis report

Static analysis result for SHA-256 6701899c9b1e2b8d…

MALICIOUS

PDF

84.2 KB Created: 2021-03-06 16:48:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 0f27d3e9244f5c15514508391e91f775 SHA-1: b019bd8973cd9dd181e3a12314293e14e161e70a SHA-256: 6701899c9b1e2b8dfc3ca8950ab48893997a39c60a0ec298edbca2a2dac52c53
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, with one identified as a potential phishing lure. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content, potentially for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://kuzutuzo.ru/wix?keyword=compositions+of+functions+worksheet+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365567/normal_5fe8389f22c7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459328/normal_602a06d817b59.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://76a725e8-946c-4ae9-9249-cda469d35108.filesusr.com/ugd/83c8cc_c40f219a37e7408fa7f95c1ed10d8066.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/what_is_power_dissipation_in_cmos.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/manual_vs_self_defrost_freezer.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/carrom_game_for_java_mobile.pdfIn PDF document text
    • https://3f5765b5-411c-4b28-96d1-a1e3b219bcee.filesusr.com/ugd/ca847e_e1b5140ea2124b0f856ed3965212975a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/mumanojenemeza.pdfIn PDF document text
    • https://6c036dbd-b327-4678-b778-de8a2ee7bb50.filesusr.com/ugd/ed64d2_b0fd175d5700432fb7d7f3e62f723f31.pdf?index=trueIn PDF document text
    • https://0cfe495c-9a5f-46a1-a5f3-fb21b6211bac.filesusr.com/ugd/7aabb2_46802c742df94e7087d2d4db26881e19.pdf?index=trueIn PDF document text
    • https://3175e58c-9db9-4d87-bcb9-15e03531d93d.filesusr.com/ugd/c93210_bd66b6e04d4d4d0dbe90c5759ef98f57.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gupojakami/bullinger_figures_of_speech.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/kamyab_jawan_loan_scheme_2019_form.pdfIn PDF document text
    • https://3cd6846c-369c-4875-9c63-132df726a2dd.filesusr.com/ugd/7ab50f_9ce0964ae94f4ef1b4d0426266821e96.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/dragon_ball_z_budokai_3_ps4.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/jipotupufijab.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/53968489466.pdfIn PDF document text
    • https://s3.amazonaws.com/gogoxowiniza/tazukexitozadekoxasage.pdfIn PDF document text
    • https://4dcfe184-cd6c-48f8-9f23-5461c743a1d4.filesusr.com/ugd/cc8533_e61dd363c67347e29ee06cd7e4ad1fe9.pdf?index=trueIn PDF document text
    • https://1ceef7f3-d523-4f80-a0a4-3aed54d3d17a.filesusr.com/ugd/48841a_28280bc231754667a666fdaf9a928812.pdf?index=trueIn PDF document text
    • https://30f21d72-2b41-4965-a7bc-2abb02bf1ded.filesusr.com/ugd/47e66e_43174c1075614c45a51a23853870183e.pdf?index=trueIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f70b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF70B 5212 bytes
SHA-256: 6c206ccb70d47934cd4dacade4a74c1e02949f0a79cd94dfa20053ccccbe9be4
font_01_sfnt_off000108b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108B3 10788 bytes
SHA-256: 9303c0a5990f10b0def3698d55f6170ed171d4acd96ec53f28f789be96d63415
font_02_sfnt_off00012ddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DDB 16152 bytes
SHA-256: 9dd161ad083bde31f1785977080a21cd00ffd1d65af7312c0685ba069ea0c2ef

Open this report in the interactive analyzer, or submit your own file for analysis.