Malicious PDF — malware analysis report

Static analysis result for SHA-256 50c00e87197d8b27…

MALICIOUS

PDF

77.3 KB Created: 2020-12-24 20:54:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e1a3a57dc8fc132fc5d9c301f90916cc SHA-1: 9a8d91b930faddf71f9378f23281f6cbb8b30b0e SHA-256: 50c00e87197d8b272b1c47b6dc12584822374cbb21f2a69b51d54e91ee757a7b
156 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 embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffe.ru/strik?utm_term=star-+wars-+kotor+mod+apk PDF link annotation
    • https://jixatazibasuv.weebly.com/uploads/1/3/4/4/134402985/5957384.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/7376adbed2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365540/normal_5f86f895d47b3.pdfIn PDF document text
    • https://lefiletigej.weebly.com/uploads/1/3/4/5/134597596/fbf239ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368956/normal_5fb25f69cb262.pdfIn PDF document text
    • https://jedawakebikota.weebly.com/uploads/1/3/4/7/134715316/batatu.pdfIn PDF document text
    • https://xuboxale.weebly.com/uploads/1/3/1/4/131452808/vovidejuzeve-xazutuj-sevuk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc5c951a-6edb-4e56-aeb5-f3916dbc9cc6/makalah_actuating_dalam_manajemen_pd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/176acc9c-d490-4703-a6de-a0c577a82055/lopojozudatasu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19a50e74-e3d5-4371-bd13-5beb2a052a3d/41252228569.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/709a6d0c-e22d-4429-b961-9525b8f9e2e7/virafedok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7374e8b3-32fd-4c8d-bc5b-b8419770810e/nozamo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbd32400-2f01-4d6a-a538-faffa55c6aa9/new_holland_t1510_manual.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e574.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE574 5364 bytes
SHA-256: 68ad29d381c95d4a2f4605a942491bd1528bcc8b059830d51b543c96511565fd
font_01_sfnt_off0000f7b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B8 15776 bytes
SHA-256: 016b58f330807fc32fd466e5e1244f947d226692c20805ded233d43a1b583fe9

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