Malicious PDF — malware analysis report

Static analysis result for SHA-256 00bdf0aca6b0633f…

MALICIOUS

PDF

95.1 KB Created: 2021-03-23 12:01:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: b7004252c20dd4af1e4a5fdbfe0ddfd6 SHA-1: 6ebf452c2710d3d74c00b30fc4ab5e71122088cb SHA-256: 00bdf0aca6b0633f1fb24fdbba5e85c3fb27585899d736204e51d0c75ba437da
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV, indicating malicious content. It contains numerous embedded URLs, with the primary malicious URL being https://soxebez.ru/award?keyword=thermodynamic+equation+of+state+derivation+pdf, suggesting a phishing or redirection attempt. The document body, though heavily obfuscated, appears to be a lure related to a technical search query.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://soxebez.ru/award?keyword=thermodynamic+equation+of+state+derivation+pdf PDF link annotation
    • https://cdn.sqhk.co/vesagivara/d0jhgda/sloth_goonies_costume.pdfIn PDF document text
    • https://cdn.sqhk.co/nilofixogezu/2M5igRF/48035441714.pdfIn PDF document text
    • https://cdn.sqhk.co/noxisoture/gSJzhgd/40321543085.pdfIn PDF document text
    • http://zabovawupe.mypressonline.com/why_isnt_my_hp_printer_not_printing_color.pdfIn PDF document text
    • http://pojibuvuj.mygamesonline.org/ruxuxowagusajitamukeji.pdfIn PDF document text
    • http://optarfes.com/12927188662b67l9.pdfIn PDF document text
    • http://lomigakorak.getenjoyment.net/boney_m_auld_lang_syne_lyrics_english.pdfIn PDF document text
    • http://useraisins.pro/how_to_find_the_volume_of_an_isosceles_trapezoid597rp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gusutawidike.epizy.com/33924606233.pdfIn PDF document text
    • https://6c71f620-b6e5-46cc-9e58-526c5f0a7a41.filesusr.com/ugd/1c90dc_2b5e7352d80743fbac78dc49832a3c23.pdf?index=trueIn PDF document text
    • https://a819be37-316e-4347-83bc-b067fb6953c8.filesusr.com/ugd/d5662a_720c576ccbff42159b8c0a1abb165523.pdf?index=trueIn PDF document text
    • http://diwadakerinepix.myartsonline.com/zadatowebobeku.pdfIn PDF document text
    • http://lumalidik.atwebpages.com/all_algebra_rules.pdfIn PDF document text
    • http://petojijoxura.onlinewebshop.net/how_do_you_clear_error_codes_on_samsung_refrigerator.pdfIn PDF document text
    • https://c207dc97-0cc9-441e-8caf-a702c1639d46.filesusr.com/ugd/36abe8_62d5950b477c414c936e5dfe7ccac480.pdf?index=trueIn PDF document text
    • http://dufobirufo.atwebpages.com/sharing_instagram_photo_on_facebook_not_working.pdfIn PDF document text
    • http://zadagudigewe.rf.gd/free_border_templates_for_teachers.pdfIn PDF document text
    • http://vivemowirarok.rf.gd/98858669406.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011870.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11870 5600 bytes
SHA-256: f1fa96daf66ae6d5cc898f00a8cc81d87397f58213b5a3e39086a650ee26238d
font_01_sfnt_off00012b5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B5B 13356 bytes
SHA-256: 4b9e71128ebc191cbe98e2ab23ee379aec64a33bd2348d57c2f82c12edacf024
font_02_sfnt_off000158a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x158A0 16396 bytes
SHA-256: 49f5f729515d8236acb1cdb6b5e376292bd67b97abbe7de788689d43c82a72e8

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