Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7e1c195a863d442…

MALICIOUS

PDF

48.8 KB Created: 2021-05-11 20:36:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b2df908efb3231036af81227cb251292 SHA-1: 82fb33e28c5b4548b3c4e3d9315812da1904ac23 SHA-256: a7e1c195a863d44235fb538d2439eb0b447e3d33c0e43c1c687eb0a545bf6d42
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, disguised as game hacks or generators. The document body explicitly mentions 'how-to-get-free-robux-app-game-hack' and includes a primary malicious URL. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9228

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-get-free-robux-app-game-hack In PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-download_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-hack-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-free-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/wurst-115-2_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/freespinandcoin_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-facebook-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-roblox-money_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-minecraft-server-maker_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-spin-links-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/rbx-sites_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-spins-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/is-coin-master-hacks-safe_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-spins-hack-but-no-surveys_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049e4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49E4 30232 bytes
SHA-256: e45d35490ecca1aec07ec8ce18e7be17d170e656c53ca12a6f2fcb30a06dc52c
font_01_sfnt_off00008f15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F15 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00009bbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BBD 18460 bytes
SHA-256: 9b29575604d2c2a5900261a35c88052e604744084870fcd9fc708b4f32deccf1

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