Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c9d7527fedb9b7b…

MALICIOUS

PDF

34.0 KB Created: 2021-07-03 23:02:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: f740be1ca5c7a356423796ba39a99c3d SHA-1: a9b9fe4fc5138723cbdc225a8469d61e8c4279dc SHA-256: 5c9d7527fedb9b7b42b0670b2c5bf84cda2ef34eb3775e02474970470ed06c5e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising game hacks and cheats. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the presence of known malicious redirectors. The document body also contains a prominent call-to-action to download, further supporting the lure. While no scripts were explicitly extracted, the nature of the links and the lure suggest a phishing or scam attempt designed to lead users to potentially harmful content.

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.tw/app/431946152/roblox-pokemon-games-free-game-hack In PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-html-pastebin_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-spins-and-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/ragdoll-roblox-hack-pastebin_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-mster-free_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-admin-hack-download-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-golden-cards-hack_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coinmaster-links_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-slurp-hack-download_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/daily-spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-flood-escape-2-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-official-page_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-hack-ohne-handynummer_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-custom-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/bad-minecraft-free_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/booga-booga-cheats-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/bloxfun-info-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/make-your-own-character-in-roblox-for-free_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
font_00_sfnt_off00003019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3019 21536 bytes
SHA-256: 68b3e24c22fc99fd82f73cafed7ae9b4f7443e655d2112e8c47151f78be43aa5
font_01_sfnt_off00005f4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4D 19232 bytes
SHA-256: ce4ed3fe5a6ef92143331e30e716c49c25871d782165c9657edfde70d7790ad7

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