Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fa9169aee96914d…

MALICIOUS

PDF

33.6 KB Created: 2021-07-03 14:56:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bb8f32fd7dcd858cfabfcc536cacf4b7 SHA-1: 50d2ea5eba865677aff5f9413295a98d1d3afbcc SHA-256: 0fa9169aee96914dbaefae51100377105376e40453282ef7f7824d75a6294620
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lure users to click on promises of free in-game currency or hacks. These links redirect to malicious infrastructure, specifically identified as a redirector for game-related scams. The document body and heuristics strongly indicate a social engineering tactic to drive traffic to potentially malicious sites.

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.tw/app/406889139/coin-master-free-spin-link-app-game-hack In PDF document text
    • https://doingimc.com/image/data/files/google-moon-active_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/free-roblox-followers-generator-2021_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/btools-hack-roblox-download-2021_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/noob-vs-pro-vs-hacker-vs-god-minecraft_GM479516143.pdfIn PDF document text
    • https://doingimc.com/image/data/files/free-spins-and-coins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • https://doingimc.com/image/data/files/how-to-get-free-robux-on-ipad-easy_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/robux-generators-that-actually-work_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/roblox-moon-tycoon-hack_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/pubg-uc-xyz_GM1330123889.pdfIn PDF document text
    • https://doingimc.com/image/data/files/mcpe-free-download_GM479516143.pdfIn PDF document text
    • https://doingimc.com/image/data/files/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • https://doingimc.com/image/data/files/coin-master-homepage_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_002_off00002e2f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E2F 22520 bytes
SHA-256: 7fbe2153295c3d90a3087fa96b17058ad3cc7c9b55e5065144b46712e20138ee
font_01_sfnt_off0000606a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x606A 18344 bytes
SHA-256: d77f5968ee6f139457a13e9b4bf1826200ab268d3ceb16018ab347131930a957

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