Malicious PDF — malware analysis report

Static analysis result for SHA-256 3423f60953e6a358…

MALICIOUS

PDF

81.3 KB Created: 2021-02-19 18:30:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 0425afde9ccb97364c9f82a7f2df5f8c SHA-1: 0bf8764b70d0647a0ecc2ecd1fd01cdbda1631db SHA-256: 3423f60953e6a358b309fdeb77fc240867c06e963f88dda89a17a1b05532248d
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL suggesting a lure for a game hack. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://bologen.ru/wix?keyword=super+toss+the+turtle+hack+apk+2019 PDF link annotation
    • http://nazevulilabume.66ghz.com/gewixewepa.pdfIn PDF document text
    • https://cdn.sqhk.co/pujapipiwat/7kKKSjg/super_dancer_season_3_rupsa_dance.pdfIn PDF document text
    • https://bemafaparad.weebly.com/uploads/1/3/2/6/132681832/1692738.pdfIn PDF document text
    • https://cdn.sqhk.co/wadupaxi/e3jhhjA/zomepoxewuguguzutapet.pdfIn PDF document text
    • https://lumewogomor.weebly.com/uploads/1/3/4/3/134319436/peravikujere-runubekox.pdfIn PDF document text
    • https://komijeji.weebly.com/uploads/1/3/1/6/131606126/tezalalofunatifugaf.pdfIn PDF document text
    • https://xaweworamek.weebly.com/uploads/1/3/4/6/134610398/dapabetobejaxudaluxu.pdfIn PDF document text
    • https://cdn.sqhk.co/xalibolopov/xjhh878/scrap_copper_prices_uk_april_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/vabalogu/jdhfhiN/21174745659.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/postal_address_for_attendance_allowance_forms.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/arcsoft_totalmedia_theater.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/ansible_template_loop_group.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/android_bottomsheetdialog_height.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/bandicam_pro_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/diwubafivojuxukavik.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/ketasiwulijala.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/34957365612.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/catch_up_with_someone_formal.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9BC 5672 bytes
SHA-256: 15b295ddb3bcb6ff05405b586cf32e21244382d75b543f4d7e0cf27b81914953
font_01_sfnt_off0000ecf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECF3 4612 bytes
SHA-256: fc3fd80f0b62bddd738a6dc8d5405a2ca793a3b5693e169205c75c587a0e9733
font_02_sfnt_off0000fe44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE44 10516 bytes
SHA-256: 82745daa0d86bc0a4eeda74d06a4fc469274f29480ea363e391d63f132397f50
font_03_sfnt_off0001228e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1228E 16036 bytes
SHA-256: 52db30b66cfb76898988bc7c6ed152514c301740808ab95bec9c68e49df23550

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