Malicious PDF — malware analysis report

Static analysis result for SHA-256 d10c74fb2ffd0987…

MALICIOUS

PDF

38.0 KB Created: 2021-05-22 00:37:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ab2e81e95f16fa077c7639b38d22cc35 SHA-1: 627cc84a2586cc268adcaee91c4bc3d2afaaa9b9 SHA-256: d10c74fb2ffd098766a6e0de57e6172494e60053f46b64ca656695051e0fce14
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, including one that masquerades as a game hack generator. The document body and embedded link targets suggest a social engineering lure to trick users into visiting these sites. No scripts were extracted, but the presence of malicious links and the lure indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7010

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/406889139/how-do-i-get-free-spins-on-coin-master-game-hack In PDF document text
    • http://svadba-moda.kg/images/free-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • http://svadba-moda.kg/images/free-roblox-clothes-and-hair_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000323a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x323A 24048 bytes
SHA-256: 35d5127db0cb5d4a5d42c52847eaa04fc4b48457592ac66c554da8c66b4fdd89
font_01_sfnt_off00006933.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6933 2896 bytes
SHA-256: c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd
font_02_sfnt_off00007318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7318 18216 bytes
SHA-256: 7b3dc5054b0587ec41e602859ac4e59ac97ec46c9406b1b4182074b4d7a08153

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