Malicious PDF — malware analysis report

Static analysis result for SHA-256 eddfe7d8a61ee4b4…

MALICIOUS

PDF

43.0 KB Created: 2021-05-12 15:06:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ff7291c6b31cf8ef07be713cd03721b8 SHA-1: 5ba0a9e8cf37ddd9f10c543f977b1eccd49ca2d9 SHA-256: eddfe7d8a61ee4b40fceabcb705684efc7d8ba3ce13023e2f89a23515f3cfbfd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs that redirect to malicious infrastructure, specifically promoting 'free spins' for a game. The document body and heuristics indicate a lure to a game hack generator, which is a common social engineering tactic. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to lead the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-get-free-spins-on-coin-master-2021-links-game-hack In PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/coin-master-hacks-for-android_GM406889139.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/coin-master-free-400-spin-link_GM406889139.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/robux-cheat_GM431946152.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/coin-master-level-4_GM406889139.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/free-robux-just-click_GM431946152.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/free-robux-obby_GM431946152.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/coin-master-stop-attack-hack_GM406889139.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/coin-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/minecraft-116-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_off00004a12.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A12 25388 bytes
SHA-256: edd5257f4d6c55c445b3e0e86317aad86837e59e0257e8373c84e5d6478bbc52
font_01_sfnt_off00008483.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8483 18624 bytes
SHA-256: f59c20d26de17689e062caab18cac0dfde3a427c20d8ecbbbaf3d06e0b2cadbb

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