Malicious PDF — malware analysis report

Static analysis result for SHA-256 886da9d046716cb0…

MALICIOUS

PDF

43.1 KB Created: 2021-05-10 17:49:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0f9e0c83b0cf5fe00626ccacb44191c4 SHA-1: 05e5ff483f3c365206f085dd019d0cb696617f12 SHA-256: 886da9d046716cb08bf16159d5c85bbba814cbf39e1b425eb448649b01af9ad6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting "game hacks" and "generators". The document body and extracted URLs suggest a lure for users seeking cheats or in-game currency, which is a common social engineering tactic. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or scam attempt, likely leading to further malware download or credential harvesting.

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/406889139/how-to-hack-coin-master-apple-game-hack In PDF document text
    • http://katalog.stikesmukla.ac.id/repository/instant-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/roblox-free-bundles_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-coins-and-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-hack-no-verification-ios_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/mcpe_GM479516143.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/my-robux_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-fun-hack_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/is-minecraft-earth-free_GM479516143.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_003_off00004816.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4816 28244 bytes
SHA-256: bf867c7807ef744b5785359019a292f188ed55757e9f34c59b62227ffe8b38f2
font_01_sfnt_off000086ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86CE 18128 bytes
SHA-256: b6a735d9e3f53415aa491e3485cc1cfcf2c3f420c3f64ca45b3fcf2c99820254

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