Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6c351e47caaf88a…

MALICIOUS

PDF

66.4 KB Created: 2021-01-22 14:12:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: d4b4751db124c1e9f28b24023e3520e9 SHA-1: dd7ffe8afc726af986fd0b5e2512a49db68e729b SHA-256: c6c351e47caaf88ad44c574c085029e56f886fbdc48d4bcb1cf0bbdfc656c070
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into clicking it. The document body, though heavily obfuscated, contains text fragments that suggest a lure related to 'missing persons cases'. No scripts were extracted, but the presence of a malicious PDF and a suspicious URL strongly suggests a phishing or social engineering attack.

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://jottigo.ru/wb?keyword=missing%20persons%20cases%20found%20alive PDF link annotation
    • https://cdn.sqhk.co/kagurase/ejdxjjf/4313803335.pdfIn PDF document text
    • https://cdn.sqhk.co/lipebefaje/icihjgG/photo_to_coloring_book.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369173/normal_5fe94c44a63d8.pdfIn PDF document text
    • https://cdn.sqhk.co/tategupet/jcc72hh/chicken_godzilla_recipe.pdfIn PDF document text
    • https://cdn.sqhk.co/melalisopapu/gfjhbN6/download_brasfoot_2020_registrado_com_todas_as_ligas.pdfIn PDF document text
    • https://cdn.sqhk.co/madagijoj/PMNhggd/47944332078.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://witolav.epizy.com/68794939601.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/gepinifo.pdfIn PDF document text
    • http://janalusexisowa.epizy.com/63890901735.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/business_model_canvas_powerpoint_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/award_after_effects_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/31484479464.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_off0000c708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC708 5388 bytes
SHA-256: 51c42e24c52f814ed41feadab9fc4d7f770c2a8e2460f341208893d1cd436a7b
font_01_sfnt_off0000d985.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD985 10532 bytes
SHA-256: 1b310a121892f72036580418345a62a87d2e91d749f135372a47deee13dee42f