Malicious PDF — malware analysis report

Static analysis result for SHA-256 4726091b27820489…

MALICIOUS

PDF

41.0 KB Created: 2021-05-21 10:37:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: fe7a5b6ceb6d7e349429e48e7a1ceb06 SHA-1: 8264e9ede35139722c6ea2be42e8e0e38a79f201 SHA-256: 4726091b27820489c93ddc062af7188a5ecb92fec0befc485eb91834ba140c45
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to a 'free Robux generator' or 'game hack' website, which is a common lure for phishing or malware distribution. The document body and heuristics indicate a malicious redirector is being used to funnel users to potentially harmful content. While no scripts were explicitly extracted, the nature of the embedded links and the lure suggests an attempt to exploit user interest in free in-game currency or cheats to compromise their systems.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7499

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://netcdn.xyz/app/431946152/get-free-robux-without-human-verification-game-hack In PDF document text
    • https://ce.itk.ac.id/asset/backend/upload/ckeditor/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://ce.itk.ac.id/asset/backend/upload/ckeditor/files/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • https://ce.itk.ac.id/asset/backend/upload/ckeditor/files/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • https://ce.itk.ac.id/asset/backend/upload/ckeditor/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://ce.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-35-2-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn 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_off0000318c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x318C 27592 bytes
SHA-256: 258917054e95d6d1a95c0c09b85c0793a19c37ff4633b2fc11df79abe7d24d5a
font_01_sfnt_off00006f0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F0D 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00007c1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C1E 19224 bytes
SHA-256: d26e558c8d9f3aa3a60cf99b5f2b698b808b007009279a89da7a3b2992804aa3

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