Malicious PDF — malware analysis report

Static analysis result for SHA-256 a96d05e0505f006d…

MALICIOUS

PDF

88.8 KB Created: 2021-02-22 21:52:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 7528126becc77034dcdc2ce6d276036e SHA-1: 17080b30613e98f14e0de0abef1d2748e6cc58e0 SHA-256: a96d05e0505f006d080bfe49150b0943854c5f74d765c89e77fb91e7b5b6a88c
154 Risk Score

Malware Insights

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

The PDF contains embedded URLs that point to known malicious redirectors and potentially malicious PDF files. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of malicious links suggests the PDF is designed to redirect users to a compromised site, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/strik?utm_term=the+power+of+less+summary+pdf In PDF document text
    • http://hangookoil.ru/4472112406xbm5f.pdfIn PDF document text
    • http://yyyyyyhhhhh.space/46906025981vph8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380523/normal_5fd1a397528fc.pdfIn PDF document text
    • https://tupuzosajabol.weebly.com/uploads/1/3/2/6/132695591/potexovud-posalama.pdfIn PDF document text
    • http://nimidarizul.22web.org/oxford_chemistry_textbook_answers.pdfIn PDF document text
    • http://jikawixekeras.iblogger.org/35980271625.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404959/normal_602b89a2cb1b4.pdfIn PDF document text
    • https://veregatuvodomos.weebly.com/uploads/1/3/3/9/133997599/fd43c9180cba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373508/normal_5ffd1fbd709af.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426408/normal_5ff4046365895.pdfIn PDF document text
    • http://mmmmmme.space/andco_actuator_manualwtkmg.pdfIn PDF document text
    • https://wogakidip.weebly.com/uploads/1/3/5/3/135384189/7381846.pdfIn PDF document text
    • http://modernstyle.pro/odia_album_song_audiooirka.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vuxirefare/52741100864.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/server_deployment_project_plan_template.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/37638221466.pdfIn PDF document text
    • http://dodemupisam.epizy.com/27553163435.pdfIn PDF document text
    • http://pejebitopaw.rf.gd/givetavepemidalatasusoval.pdfIn PDF document text
    • http://buloderijapu.epizy.com/driverack_260_vs_pa2.pdfIn PDF document text
    • http://dasilumenuf.rf.gd/sifuzebeli.pdfIn PDF document text
    • https://s3.amazonaws.com/godoremitiwuja/scholarship_2019_answer_key_8th.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fdcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDCF 5424 bytes
SHA-256: 41d3ef436c0c280afdce692bee3320196d0dda9906fff7df1d42430eed9e37ed
font_01_sfnt_off00011020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11020 3008 bytes
SHA-256: 83ee758ea04b60e881461bd20a01d7ed40c633060ca4ae868c5d8b75527ef44b
font_02_sfnt_off00011cd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CD0 10340 bytes
SHA-256: 19319e0490c927921c4a60d8e84790db3b07ce967ce78f6a66556738860ff041
font_03_sfnt_off0001406e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1406E 16092 bytes
SHA-256: c9557d91917e40dbb2ce09b7ef560a04a9a832ffe2ebcac6b50408a58351272e

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