Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f9d59fec21da4b0…

MALICIOUS

PDF

71.5 KB Created: 2021-02-05 14:52:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 686ea40bbaef1af0fb90484424643565 SHA-1: 5ef9ddfe42020407ceaf087ffaf98fd5a0a42789 SHA-256: 9f9d59fec21da4b0b1076396bf9bf7e0aa00d93a1a5e7d24108bd6d5e2a4f540
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for a phishing trojan. The PDF contains a large number of external links, suggesting a link farm or phishing campaign. The document body, though heavily obfuscated, contains keywords related to 'Guide Michelin Paris' and 'wkhtmltopdf', indicating a lure to disguise the malicious intent. No scripts were extracted, but the PDF structure itself is designed to redirect users to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://bologen.ru/wb?keyword=guide%20michelin%20paris%2075018 PDF link annotation
    • http://ericksandoval.com/viniplus_ultra_sherwin_williams_es_b3icn4.pdfIn PDF document text
    • http://laura-egorova.ru/fuchai_200w_user_manualku17z.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367279/normal_5fdf1c262c063.pdfIn PDF document text
    • http://leree4.club/nobakewuwoxizefovusezumuvlw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451229/normal_601aace2b761f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387932/normal_5fce85367b217.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478387/normal_60102ec8c92fe.pdfIn PDF document text
    • https://pukakiliratof.weebly.com/uploads/1/3/4/7/134768090/8994480.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453914/normal_5fc56f302d034.pdfIn PDF document text
    • https://xujeloza.weebly.com/uploads/1/3/4/0/134096435/padirusofux.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424996/normal_5fd088cc56968.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485800/normal_5ff7086cb3954.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446283/normal_5fc6a605ab285.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450045/normal_5fddcb510d5b4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376362/normal_5fcbce485d67b.pdfIn PDF document text
    • http://wowunoli.22web.org/dreamstation_auto_bipap_clinical_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475734/normal_600f14a4488a0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374983/normal_5fe2e8e03f4d4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366003/normal_5fedf2e76b60b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://desiwafinu.epizy.com/certificate_of_completion_construction_form.pdfIn PDF document text
    • http://dudolisimak.epizy.com/18053332568.pdfIn PDF document text
    • http://julajibumomas.rf.gd/present_perfect_tense_worksheet.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_off0000d932.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD932 5936 bytes
SHA-256: dd50508bb4635255dff9ece9e22fcd25406887a9a4bb1d6e41237aac3304b15a
font_01_sfnt_off0000ed45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED45 11008 bytes
SHA-256: a8df27ae2f5dfed69a14e30321311e52b69934f349570966b0eeb8d72a6a7c92

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