Malicious PDF — malware analysis report

Static analysis result for SHA-256 67c7d9c21d9be5d3…

MALICIOUS

PDF

44.0 KB Created: 2021-05-16 23:44:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: deb960439b6826056bdd3eedbca83416 SHA-1: 7e99f3c4786ac8ede8fcedfce9d633b78f89914a SHA-256: 67c7d9c21d9be5d321fd0edc14b24d1269928ffea20c192b3a98745a864671c1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links that redirect to known malicious infrastructure, specifically promoting 'free generators' and 'game hacks'. The document body and extracted URLs strongly suggest a phishing or scam attempt designed to trick users into visiting these malicious sites. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/free-robux-websites-that-actually-work-2021-game-hack In PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://ma-hidayatulinsanpky.online/__statics/gudangsoal/files/new-free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/hack-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://ma-hidayatulinsanpky.online/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://ma-hidayatulinsanpky.online/__statics/gudangsoal/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://ma-hidayatulinsanpky.online/__statics/gudangsoal/files/free-spins-and-coins-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/coin-master-game-free-download_GM406889139.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/robux-apk_GM431946152.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://ma-hidayatulinsanpky.online/__statics/gudangsoal/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/coin-master-hack-online-generator_GM406889139.pdfIn PDF document text
    • http://ma-hidayatulinsanpky.online/__statics/gudangsoal/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/mcpe-master-free-coins_GM406889139.pdfIn PDF document text
    • http://www.ma-hidayatulinsanpky.online/__statics/gudangsoal/files/best-free-roblox-outfits_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
font_00_sfnt_off00004bf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BF0 25168 bytes
SHA-256: 25da0792e4fcd26d4988541b25b1772511fae2cb181d3fe207c159ec42e829c1
font_01_sfnt_off000085b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85B2 19656 bytes
SHA-256: 7b3ca8e33f6ab65cae0b12a773bae5d0e0377a7b1030ef9ec14be3c3cdd71d54