Malicious PDF — malware analysis report

Static analysis result for SHA-256 462571fdc71e4ae3…

MALICIOUS

PDF

84.4 KB Created: 2021-04-06 15:17:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 50c0289815bcaf8cbc178afc1cf1b1a0 SHA-1: 3c88db27f6c170388988b60f7412e2d2f1fa9943 SHA-256: 462571fdc71e4ae30a3ce9fbdf6b449ea5c579c74e02c3a9cc96bc0e3de2e446
96 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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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://fokemale.ru/strik?utm_term=personality+classic+theories+and+modern+research+4th+edition+pdf PDF link annotation
    • https://cdn.sqhk.co/neganobasiwe/iTiaThb/new_buyers_guide_for_used_cars.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378618/normal_5fff170a74ee9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502833/normal_603136d5b189b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472783/normal_5fd388f1283d0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385862/normal_5fdff20833e0d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489032/normal_5fca0477ed375.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374178/normal_604205c589f06.pdfIn PDF document text
    • https://cdn.sqhk.co/sipebesoxu/CbT1ghp/everfi_module_5_credit_scores_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/kasavakujosi/Rkghgg7/lojira.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383695/normal_6022adf036bef.pdfIn PDF document text
    • https://cdn.sqhk.co/xoxamomajil/sZgiJjj/home_ar_designer_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490367/normal_5fe78dce230a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487200/normal_6040a6e297bdc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473645/normal_60451430be598.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417205/normal_5fee4c511f928.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419204/normal_604f2e034e8b5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370768/normal_5fffa573e9a86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366043/normal_5fd9c13a9ff05.pdfIn PDF document text
    • https://cdn.sqhk.co/fabokofe/uflagcd/85575443170.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482415/normal_6040b8e4934b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401723/normal_605b3bd0366a1.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/93cf2728-cf30-4dfb-9ceb-b65a1249c486/citizen_wr100_battery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b74bc1f-e3a2-4919-a63a-c45c9e065b5f/data_analysis_tools_excel_2016.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001106d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1106D 5588 bytes
SHA-256: bfdc18cb0f173834cf3a992f32b0ea010e68813500ca5d3bd4042189000d1fde
font_01_sfnt_off0001234b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1234B 11852 bytes
SHA-256: 1e6712b08592aef9878755bb26bcd21752f3f8e5659c5f315806fbd5a52d4af8

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