Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f7fbede2df0c28e…

MALICIOUS

PDF

34.1 KB Created: 2021-07-01 14:42:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 53d54eefe39e53ecd31b1d31e4a9c336 SHA-1: 6a3b08a1cb4bc923ad7c14688cc0d7694a2bbf61 SHA-256: 3f7fbede2df0c28e2ad4595cc52d43798f1b3befdf0bd34c398e9b0876628ae2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a known malicious domain, masquerading as a 'free generator / game hack'. The document body and extracted URLs indicate a lure for popular online games, aiming to trick users into visiting the malicious site. While no scripts were explicitly extracted, the PDF structure and malicious links suggest an attempt to lead the user to a compromised site, likely for further exploitation or credential harvesting.

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/1094591345/pokemon-go-free-gyarados-game-hack In PDF document text
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/script-executor-roblox-free_GM431946152.pdfIn PDF document text
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.pdfIn PDF document text
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/i-want-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/hacking-robloxs-account_GM431946152.pdfIn PDF document text
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/minecraft-free-ios-no-verification_GM479516143.pdfIn PDF document text
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/roblox-xyz-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/pokemon-go-free-864_GM1094591345.pdfIn PDF document text
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/free-coin-master-links_GM406889139.pdfIn PDF document text
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/hack-coin-master-link_GM406889139.pdfIn PDF document text
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/how-to-get-fre-robux-2021-novmber_GM431946152.pdfIn PDF document text
    • https://elearning.man1-kotagorontalo.sch.id/__statics/gudangsoal/files/free-roblox-hair-girl_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
stream_002_off00002ec2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2EC2 22712 bytes
SHA-256: 572afbd04daf174b9108b76d125e3fca8afb8a65e3bf0e366dd9ec9fba661d16
font_01_sfnt_off00006169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6169 18712 bytes
SHA-256: bd50f307ea686b5983ae2074d86dd5996a756016f39f0fc1268ad3959bcea89e

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