Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ff48a7015a8fab3…

MALICIOUS

PDF

69.6 KB Created: 2020-11-30 02:42:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c91f9f3fe8c03a1e44f50b99f59660e0 SHA-1: 11c46f191623ac58a880dba111f1c2bff5a58e22 SHA-256: 9ff48a7015a8fab3f511053029399c96435e18c86b6564d94b5e93e69c1c7779
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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://traffmen.ru/strik?utm_term=nightmare+house+2 In PDF document text
    • https://mufuwavujove.weebly.com/uploads/1/3/4/0/134042856/muzajiwifixame_molarom_gerovoba_sowaruzugeloma.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393776/normal_5fa280ee0e423.pdfIn PDF document text
    • https://nanerofe.weebly.com/uploads/1/3/4/3/134312873/sekadubilaxerito.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402533/normal_5f9b7d0fa5489.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403557/normal_5fbc190ac87fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366010/normal_5f87fa8571f54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461748/normal_5fa1a5522270a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/rebesudanolo/chandrayaan_2_images_and_information.pdfIn PDF document text
    • https://s3.amazonaws.com/wemupajese/3852095834.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/dlink_932l_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/xebodapuzamefudujaze.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/easd_guidelines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d51c4cf2-88ad-4ab9-b5c5-f19221f10629/69586181281.pdfIn PDF document text
    • https://s3.amazonaws.com/gajejasa/pijawuzuj.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC924 4944 bytes
SHA-256: 33528992fcd879b6042ea77aa3e24482bcac64aad7e3e13ef9c72f82206ed4f7
font_01_sfnt_off0000d9f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9F8 9900 bytes
SHA-256: 22d0b06aafd2e3d0fae02678d0516bd329c1cfbc971b47a0cec992c06784aaf5
font_02_sfnt_off0000fbcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBCF 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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