Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7b22935724408ec…

MALICIOUS

PDF

44.1 KB Created: 2021-05-17 10:05:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 60f254bfa9b9780176b1fa254ffb0d8a SHA-1: ac806bc4ea8b83b2d003ac0f57b6ec7b8dd790f1 SHA-256: b7b22935724408ec36620e7b9d4c31a34223b2070559b9cfd5454add96a1a362
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting 'free generator / game hack' lures. The ML classifier strongly indicated maliciousness. The primary IOC is the redirector URL, which is designed to lure users into clicking through to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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-change-your-username-in-roblox-for-free-game-hack In PDF document text
    • https://cfla.gov.lv/userfiles/files/coinmasterdailyfreespins-com_GM406889139.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/coin-master-hack-co_GM406889139.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/roblox-free-items-glitch_GM431946152.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/free-coin-and-spin-link_GM406889139.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/coin-master-free-spin-and-trading-group_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a1d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A1D 25744 bytes
SHA-256: 9c8e31bae77070962cf7d850bb67459a2f2a85111862791378bd5a445b90b2ec
font_01_sfnt_off0000869b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x869B 19540 bytes
SHA-256: 47934da0ee3f947cf015c12c60a39e8e7f45bd5e58593390266dea94dc2cb6c6

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