Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fef9590f43377f5…

MALICIOUS

PDF

75.9 KB Created: 2021-02-19 23:48:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 7057e2115fc88da6b53fa629256b178b SHA-1: a122571c8a2bf3a8f8063f8c071b0c62a421d774 SHA-256: 4fef9590f43377f55e341ffc42686743aee717a68399787425987269d50e6eec
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a website advertising a KitchenAid oven. This is a common lure for phishing attacks, aiming to trick users into clicking the link. ClamAV and ML classifiers strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/wb?keyword=kitchenaid%2030%20inch%20double%20oven%20electric%20range%20-%20stainless%20steel PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4495975/normal_5fe8bf3090ca5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457014/normal_600a1a3502ad2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483586/normal_602ec29ac4db0.pdfIn PDF document text
    • http://javugejerez.22web.org/kupenime.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481402/normal_5fe1afd958895.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495254/normal_602b956cae01e.pdfIn PDF document text
    • http://kaxazul.iblogger.org/talabopunijufituwiziguti.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/zisulamisozoto/application_x-_www-_form-_urlencoded_l_g.pdfIn PDF document text
    • https://s3.amazonaws.com/lukepepe/zexenimizutiwivagawoxi.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/52004225421.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/74769602471.pdfIn PDF document text
    • http://kunizifafam.epizy.com/lulabuxumogulujiji.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/desasikutameliwaw.pdfIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/38650852626.pdfIn PDF document text
    • http://gimapetabotoza.rf.gd/sejeg.pdfIn PDF document text
    • https://s3.amazonaws.com/takurugilij/capra_cu_trei_iezi_ion_creanga.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/72928529597.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_off0000e9b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B0 5708 bytes
SHA-256: 65e97b88c0f55f59530e5f843cb3991c47e6a82f421999aadd2e36a25a7f7bba
font_01_sfnt_off0000fd1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD1E 10976 bytes
SHA-256: 51eecb883a44ccc6de94c0295e86fd810ee6ff4943999aeca4807781d4d86796

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