Malicious PDF — malware analysis report

Static analysis result for SHA-256 b269190e6c3cdf76…

MALICIOUS

PDF

75.9 KB Created: 2021-02-25 04:24:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 97410115750c443b4683d207ea3fe0b6 SHA-1: 3dbd70b550fd86d622709ecfad2c9a1c5d58d312 SHA-256: b269190e6c3cdf76893a24b26fcbe1ecc05d15148b8456991fbba1e6fabec9f9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded URLs, one of which is identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to deliver a second-stage payload or phish credentials. The document body, though heavily obfuscated, contains text related to a movie title, suggesting a lure to entice users to click the malicious link.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/strik?utm_term=luciernagas+en+el+jardin+pelicula+completa+pelisplus In PDF document text
    • https://cdn.sqhk.co/gemadaruvow/jcTghps/pocketmine_plugins_list.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387046/normal_60294f03f0f22.pdfIn PDF document text
    • http://wspring.space/756590254674f3hh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419654/normal_5ff96d6663e0b.pdfIn PDF document text
    • https://cdn.sqhk.co/novozefox/cG8Iejb/badepovuxuriba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453328/normal_601bd11c26ccd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496592/normal_6022e6b2447ea.pdfIn PDF document text
    • https://cdn.sqhk.co/xezojutatow/gLdushh/42306565639.pdfIn PDF document text
    • https://cdn.sqhk.co/bidekidarub/uijhifZ/92922921183.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496824/normal_5fda643509f91.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412763/normal_5fdebb47e4e8d.pdfIn PDF document text
    • https://cdn.sqhk.co/monubinejon/ftRjjhh/wish_me_luck_agoria_lyrics.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384164/normal_5fd639a0655a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480755/normal_6028f799d5caa.pdfIn PDF document text
    • http://micrometerdigital.xyz/7228013746999yns.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369305/normal_5fc6d52a8f0ac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e65b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE65B 5412 bytes
SHA-256: 1f4144283a837956e503880c77b5decfa99499c9089adf5ec03a40c2c8db999c
font_01_sfnt_off0000f8b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8B6 12272 bytes
SHA-256: f6579dcd65039730edf2268c6e2fba96a25f468c830bd15dda443ecb0948699b

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