Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b357c0dbde61d5…

MALICIOUS

PDF

46.7 KB Created: 2021-05-11 23:38:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f82b29b361eb01d84908783d46843815 SHA-1: bd6f36e6aa346cdd7a3f451495636d30ea1803ef SHA-256: 72b357c0dbde61d53fc4e033b1cd91be7bfc12eec59d36fbd3b1363b7f1f5d06
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that offer game hacks and free in-game currency, such as 'Coin Master Free Spin Redeem Code'. One critical heuristic identified these links as pointing to malicious redirector infrastructure. The document body and embedded links strongly suggest a social engineering lure to drive users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/coin-master-free-spin-redeem-code-game-hack In PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/free-spins-coin-master-october-13-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/give-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/coin-master-hacking-news_GM406889139.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/coin-master-attack-madness-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/free-roblox-toys_GM431946152.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/minecraft-pc-download-free-full-version_GM479516143.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/100-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/robux-generator-com_GM431946152.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/free-role-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/coin-master-code-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/roblox-2021-hack_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_003_off00004ce3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CE3 27324 bytes
SHA-256: fd4bf5a6c9da2c3ecf4c48da7a737c57ce2f43f15696e965a6dc340c37f8cd2c
font_01_sfnt_off00008a77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A77 2812 bytes
SHA-256: fc92a80cefddbcc51cb4ecd7284aa73b746cbd66adcf1d96110f0323ec06b51f
font_02_sfnt_off00009418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9418 18320 bytes
SHA-256: 6dc583b2cf42d8f66261eb7e7ae0cb761f5dd774cb396d87b40b3163a1218d8e

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