Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1e116bcfb28e9fb…

MALICIOUS

PDF

73.9 KB Created: 2021-03-14 06:58:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aebe5db0d6ce060460bf4700d8cc4a28 SHA-1: e9cbfd013a1551c0bfc7180c729d4cf3cb04446f SHA-256: d1e116bcfb28e9fbe4bb34f6ffc9fabe7190f9153ef635ee526f0a93f06479d8
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, identified by heuristics as a potential phishing or malware distribution lure. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the presence of the malicious URL suggests an attempt to redirect the user to a compromised site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://resalured.ru/wix?keyword=area+of+irregular+shapes+worksheet+3rd+grade
    • http://life-news.tech/pisorisizulaso7e20q.pdf
    • http://larts.digital/18068994940tapkg.pdf
    • https://buliduxefexefux.weebly.com/uploads/1/3/1/6/131636978/nufebir-wimosovepilok.pdf
    • https://safamitiwifiro.weebly.com/uploads/1/3/0/7/130739579/e7944.pdf
    • https://jetosiwer.weebly.com/uploads/1/3/4/7/134767378/d4cb7.pdf
    • http://motivawka.online/fejoranufonhz4y.pdf
    • https://cdn-cms.f-static.net/uploads/4449783/normal_5fd6765ab30c8.pdf
    • https://static.s123-cdn-static.com/uploads/4386613/normal_5ffeeeb28756c.pdf
    • https://static.s123-cdn-static.com/uploads/4450141/normal_5fe2d9c9655a7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/834f98f2-c0a1-41bd-a4a7-0115a7af8f6b/goramudowizepelukazulej.pdf
    • https://uploads.strikinglycdn.com/files/897ad206-1e21-434c-85a0-b33b16721b37/dictionary_of_japanese_grammar_anki.pdf
    • https://uploads.strikinglycdn.com/files/07298662-5683-4920-a9d2-d073465cee74/logo_creator_software_for_windows_7.pdf
    • https://uploads.strikinglycdn.com/files/429d13c4-c97b-495b-922a-bb9fbd1ab664/67264664934.pdf
    • https://22e365c6-0853-42e1-82f8-83473bf9c0bf.filesusr.com/ugd/217d68_151cf58322464c21bd0f9eb3697783c8.pdf?index=true
    • https://uploads.strikinglycdn.com/files/82b42fdd-5bcc-4277-b310-0f397c023ff1/86130493572.pdf
    • https://5b0e1d79-1acc-45ba-a965-31015372eee8.filesusr.com/ugd/67f5f7_49114d12b832414384cbd9c9a05c9a68.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e34a.bin
a4d19e056ea0771504fd9e1382e734374286a7de6be4630546ba472dda80e031
pdf-font-stream PDF embedded font (sfnt) at offset 0xE34A 5612 bytes
font_01_sfnt_off0000f673.bin
831e417e462909e261d4b42279a099651f0f7cb5d8d10b2b9d12175d77552088
pdf-font-stream PDF embedded font (sfnt) at offset 0xF673 10736 bytes