Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fda053f12baa4a9…

MALICIOUS

PDF

74.4 KB Created: 2021-02-15 14:48:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 6530d3b9bce39e701817eb7be018ff5a SHA-1: b583799aabbdad4a3e86e38dbd75c31d7986abd8 SHA-256: 4fda053f12baa4a935a1643936768ac379712acf1f1b5eb1e6d3fb25ffa67177
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that, when visited, likely leads to a phishing or malware download site. The document body, though heavily obfuscated, contains text related to the embedded URL's search query, suggesting a social engineering pretext. The ML classifier and ClamAV detection strongly indicate malicious intent.

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://maypoin.ru/strik?utm_term=how+to+set+time+on+nortel+networks+phone PDF link annotation
    • https://cdn.sqhk.co/wufevinek/idAH6jc/financial_times_uk_coronavirus.pdfIn PDF document text
    • https://cdn.sqhk.co/poxirowo/hewqgge/47681009150.pdfIn PDF document text
    • https://cdn.sqhk.co/rokunufoleti/hal4NO9/unfinished_wood_halloween_cutouts.pdfIn PDF document text
    • https://cdn.sqhk.co/varomapit/KnE1igd/ruvaxugigasekifir.pdfIn PDF document text
    • https://cdn.sqhk.co/gunobawiwax/hicidid/tamilrockers_free_hd_movies_download.pdfIn PDF document text
    • https://cdn.sqhk.co/xenudipu/ssluhhS/68478861506.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487386/normal_6009ec0979d52.pdfIn PDF document text
    • https://cdn.sqhk.co/mogowepuw/iFLp5rG/globe_view_bill_statement.pdfIn PDF document text
    • https://cdn.sqhk.co/xoresarib/LjcnIMb/can_am_defender_xmr_hd10_top_speed.pdfIn PDF document text
    • https://cdn.sqhk.co/kososojog/hiE1ngf/xemazuzuwunifazoziza.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://soxixebupi.rf.gd/medetozemofupifigelupobi.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/former_bophuthatswana_national_anthem.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/vijeo_citect_2015_web_client_guide.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_off0000ccc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCC2 7540 bytes
SHA-256: 760b26e578cecd768437c723fa9651b2c4f16441bb314bdd1f67ec154c9aaf0f
font_01_sfnt_off0000e664.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE664 4968 bytes
SHA-256: b3c7babf5bc8c73b9640c2a5b3c046a185c401fd36f364c2b9390c52235c2516
font_02_sfnt_off0000f72c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF72C 10840 bytes
SHA-256: 4ca53ba3038ee16ee1aad0c8f3fbd7f2ec231e63fadd0742482076c349b12733