Malicious PDF — malware analysis report

Static analysis result for SHA-256 d11f009ca487564a…

MALICIOUS

PDF

264.8 KB Created: 2021-02-20 12:50:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: e3caf877682e8e43c2396c0c548c4083 SHA-1: 1abd60c210d9be4c3b57e0190a71c35310bd4f2d SHA-256: d11f009ca487564ad70cd0e658abee532b9eb840c1cd3eda66edeeed074a4af3
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The ML classifier also flagged the PDF with a high probability of being malicious. The embedded URL, https://crophysi.ru/123?utm_term=louisiana+tort+law+outline, is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9768

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/123?utm_term=louisiana+tort+law+outline In PDF document text
    • https://cdn-cms.f-static.net/uploads/4402721/normal_600b42472a7bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384832/normal_602865b9ee8ac.pdfIn PDF document text
    • http://lalojit.iblogger.org/sizuvevikotalozux.pdfIn PDF document text
    • http://bestsaleshopin.xyz/28159636173gr8at.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450256/normal_60029fc83281f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410730/normal_5fdd3405c8bea.pdfIn PDF document text
    • http://form-lnstagramverifiedbadges.com/lefodusofix1h.pdfIn PDF document text
    • http://taygerr.com/the_gastric_sleeve_bariatric_cookbookjl9jr.pdfIn PDF document text
    • http://policyhelpcenter.com/nigexejugama8j1zw.pdfIn PDF document text
    • http://pumujavebedopa.iblogger.org/55496566630.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464083/normal_601b3df06debf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xesigeze/83265833632.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/aerith_theme_piano_sheet.pdfIn PDF document text
    • http://mujunuge.rf.gd/free_carfax_report_promo_code.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/how_to_improve_listening_skills_and_memory.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/disney_animal_kingdom_showtimes_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/56899399320.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/lemeva.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/winosagemuwet.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/lirakoteponutajovebafuxol.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003ce8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3CE8A 4596 bytes
SHA-256: eab2298e048ab5fc61fe96962237d591cee26046e0987cd8b1a959dc1638e423
font_01_sfnt_off0003de3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3DE3F 11468 bytes
SHA-256: dc6840036c0cd239f0d80150ccc0659805b625433539cf12627484b582a6b105
font_02_sfnt_off00040527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40527 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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