Malicious PDF — malware analysis report

Static analysis result for SHA-256 68598575b36883ee…

MALICIOUS

PDF

71.5 KB Created: 2021-02-09 14:07:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 16f0463cf4bc89a662463fa730c3f6c9 SHA-1: f326d8869571c538893b1849bd14377f2fcaf56f SHA-256: 68598575b36883ee357ae3c113e47cac867013eb429a2aa12c86f6f892698968
184 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, includes text related to 'El Camino 2019 movie', suggesting a lure to attract users to potentially malicious content. The presence of numerous links on disposable hosting further supports a phishing or redirection attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wb?keyword=el%20camino%202019%20movie In PDF document text
    • http://zomuregunaradu.iblogger.org/dozitibuwevuxinomive.pdfIn PDF document text
    • http://vitolebizojigok.22web.org/69555385532.pdfIn PDF document text
    • http://milanbeach.fun/infinite_flight_global_apk_all_planes_unlockedf543v.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365661/normal_5fc825b4225d8.pdfIn PDF document text
    • http://findssldz.xyz/jw_library_for_pc_free_downloadzb2ov.pdfIn PDF document text
    • http://legiontry.online/growtopia_harvest_fest_calculatorc3gjm.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nixevafuzija.epizy.com/mopimufozanivugawirigavu.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/19063660871.pdfIn PDF document text
    • http://jasukapikubov.rf.gd/length_conversion_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/tinezedu/40502785188.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/fozezasimonixelenakiv.pdfIn PDF document text
    • http://xevarefuwiku.epizy.com/best_form_of_choline_for_memory.pdfIn PDF document text
    • http://xosufatobula.rf.gd/46685931056.pdfIn PDF document text
    • http://marenoko.epizy.com/alcatel_one_touch_pop_c9_rom.pdfIn PDF document text
    • http://kunonepu.rf.gd/32384008283.pdfIn PDF document text
    • https://s3.amazonaws.com/difigomisosak/schedule_d_2017_worksheet.pdfIn PDF document text
    • http://relizaki.epizy.com/steinberg_cubase_5_full_crack.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_off0000daf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF8 5168 bytes
SHA-256: 3de96dc50bd1ccb8fc4d80bc0e605a4505d4d5b48419dcabc164f4b9d58ab8fa
font_01_sfnt_off0000ec93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC93 10648 bytes
SHA-256: f9114af472536ff7db2331a61803fe463e9c52de8debaf9420d3beab5360df7b

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