Malicious PDF — malware analysis report

Static analysis result for SHA-256 d26525533329cc45…

MALICIOUS

PDF

35.8 KB Created: 2021-06-17 20:17:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1a6a8926e3c48c5495c9e93abb0e90e8 SHA-1: d45b9465a3f70cb5918fad07cf6c369e0866ec85 SHA-256: d26525533329cc45cbdac4e5f02cb1f65a84dc042f33f633ac8d5b3959bc1fbd
160 Risk Score

Malware Insights

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

The PDF contains multiple links to a known malicious redirector, disguised as offers for free game currency and hacks. The document body and embedded URLs strongly suggest a lure for users seeking in-game advantages. The primary malicious action observed is redirection to potentially harmful content, likely to facilitate further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-get-free-robux-easy-no-survey-game-hack In PDF document text
    • http://apcupschennai.com/images/coin-master-free-pet-snacks_GM406889139.pdfIn PDF document text
    • http://apcupschennai.com/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://apcupschennai.com/images/pokemon-go-free-vpn-android_GM1094591345.pdfIn PDF document text
    • http://apcupschennai.com/images/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • http://apcupschennai.com/images/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://apcupschennai.com/images/how-to-get-free-gamepass-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://apcupschennai.com/images/pubg-uc-buy-in-pakistan-jazz-cash_GM1330123889.pdfIn PDF document text
    • http://apcupschennai.com/images/download-coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • http://apcupschennai.com/images/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://apcupschennai.com/images/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://apcupschennai.com/images/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://apcupschennai.com/images/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://apcupschennai.com/images/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • http://apcupschennai.com/images/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://apcupschennai.com/images/coin-master-attack-block-hack_GM406889139.pdfIn PDF document text
    • http://apcupschennai.com/images/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://apcupschennai.com/images/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://apcupschennai.com/images/mcpe-optifine_GM479516143.pdfIn PDF document text
    • http://apcupschennai.com/images/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://apcupschennai.com/images/free-robux-only-username_GM431946152.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
font_00_sfnt_off0000321d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x321D 23320 bytes
SHA-256: d07c8bfe5aab8653beaafe7857113c03fe212eaa3b72c586c97a29a432952baf
font_01_sfnt_off000066d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D9 19092 bytes
SHA-256: d7083f225c38f5b2983f89b89e6e9bf1c52e4c40bea2ad29bedec5ff60cbb282

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