Malicious PDF — malware analysis report

Static analysis result for SHA-256 321b7627225bc186…

MALICIOUS

PDF

34.5 KB Created: 2021-06-28 04:34:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 23fcdcef24d60ca165f595e3ebb2fc12 SHA-1: abdc0effc60cc418376951e52e130b8f8b8ecbf9 SHA-256: 321b7627225bc1867a8687d99a06ee4892c8fab38306f4d598185551383a90bf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure, disguised as a 'game hack' lure. The document body and embedded URLs strongly suggest a phishing attempt to trick users into visiting malicious sites, likely for credential harvesting or further malware delivery. No scripts were extracted, but the presence of malicious redirectors and the lure indicate a high likelihood of a phishing campaign.

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-hack-roblox-ios-2021-game-hack In PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/how-to-hack-roblox-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/free-robux-no-human-verification-2021-android_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/coin-master-hack-no-survey_GM406889139.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/earn-free-robux-rbxnow-gg_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/earn-robux-for-freecom_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/mcpe-com_GM479516143.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/free-robux-no-surveys-no-human-verifacation-2021-2021_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/free-roblox-injector_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/free-apk-mods-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/cheat-granny-roblox_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/roblox-robux-hack-online-2021_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/descargar-roblox-hackeado-2021-ultima-version_GM431946152.pdfIn PDF document text
    • https://www.sharmagoa.com/uploaded_files/userfiles/files/rbxoffers-com-free-robux_GM431946152.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_off00002f35.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F35 22260 bytes
SHA-256: 6778baef93b16ac3ba9b8b12e2fb7f9a7c9b23d4cfe1a8af812c265ad4c1ed9a
font_01_sfnt_off000060f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F1 19224 bytes
SHA-256: 0ee56e4ca5cfa3731961c6c1e4b9a918885e2421fee968df93df243534c52f52

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