Malicious PDF — malware analysis report

Static analysis result for SHA-256 d14068eafb6dbd33…

MALICIOUS

PDF

73.3 KB Created: 2021-04-08 21:40:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 11d270369fa3a35181edd048aace9be8 SHA-1: 5918211cfdc505ad1565338726163453aed6ff87 SHA-256: d14068eafb6dbd33d80718c93f73e0c08bc4bd60683f761a682a41f05b469b64
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is highly indicative of a phishing or malware distribution attempt. The document body, though heavily obfuscated, references a specific product, suggesting a lure to entice users to click the malicious link. The ClamAV detection and ML classifier further support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://vilenefex.ru/strik?utm_term=whirlpool+microwave+wmh53520cs+light+bulb PDF link annotation
    • https://cdn.sqhk.co/tamaladafa/V4heiig/neo_geo_games_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/porekige/XEqVhiJ/funny_mountain_climber_pics.pdfIn PDF document text
    • http://xulenegutuwovi.iblogger.org/89262700636.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/vofadoloves/scratch_programming_tutorials_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/setutapemeruturenurudex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd25d7e1-1979-4c8c-9565-1be5c3ce60d5/bernina_1080_light_bulb.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/jepitowokijirulimadumas.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/whos_afraid_of_virginia_woolf_movie_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/synonyms_listen_to_memories.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7d82b0d-73c0-48d3-8148-451fe4440e19/garakuwa.pdfIn PDF document text
    • http://worifazitinel.rf.gd/wpf_tutorial_c_corner.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc997b6d-f0de-4ff1-9197-89066b4b571d/kahr_pm9_vs_cm9_vs_cw9.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/can_i_use_skin_so_soft_bug_guard_on_my_dog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07514e48-9b4a-4411-9288-abf951c4fbd3/find_missing_songs_on_itunes.pdfIn PDF document text
    • http://vilobeve.rf.gd/56175261159.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/cape_landform_in_trinidad.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_off0000dd42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD42 6216 bytes
SHA-256: ffdc45e91994eb315633492c64b5dd89fd8296212c5e787fce059065e9e0c30c
font_01_sfnt_off0000f257.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF257 10916 bytes
SHA-256: b0738a6a2a102d95f584bb1f3bd1790297cdab1efffa96026c71aaf928897456

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