Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7a2f1c8134f3a8c…

MALICIOUS

PDF

39.5 KB Created: 2021-05-30 09:32:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 253c4666a0d296f3a2d862e6defbbe05 SHA-1: 9bb7fa14655e6ebb243e898c400751902ffe6c1f SHA-256: c7a2f1c8134f3a8c8c32821115cd191ae1f368a012fd01180e0110c20ff05c58
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a common lure of free game currency and hacks to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which in turn hosts multiple other lures related to games and free accounts. The ML classifier strongly indicates maliciousness, and the PDF structure itself contains multiple redirector links, suggesting a downloader or phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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/how-to-get-free-robux-no-human-verification-2021-game-hack In PDF document text
    • http://totrakarismeno.gr/wp-content/uploads/fsqm-files/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://totrakarismeno.gr/wp-content/uploads/fsqm-files/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • http://totrakarismeno.gr/wp-content/uploads/fsqm-files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://totrakarismeno.gr/wp-content/uploads/fsqm-files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://totrakarismeno.gr/wp-content/uploads/fsqm-files/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://totrakarismeno.gr/wp-content/uploads/fsqm-files/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://totrakarismeno.gr/wp-content/uploads/fsqm-files/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • http://totrakarismeno.gr/wp-content/uploads/fsqm-files/free-tiktok-accounts-and-passwords_GM835599320.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003912.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3912 26656 bytes
SHA-256: c54a26c13707f9e098e4f5d19b00074775666ed77040c664d45d8a43d703aa1e
font_01_sfnt_off0000755f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x755F 19428 bytes
SHA-256: dc7c459a90b1a398d2ee51f52972ed8a07904c77cd045887558a99bdb9823e3c

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