Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fd47fc76fbecb58…

MALICIOUS

PDF

34.4 KB Created: 2021-07-08 14:03:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: fd3230d8e6d5fdd50f3dee4ffd7325f5 SHA-1: c6d9ee3213836a7d6eb95cf960674b6ffb934e97 SHA-256: 8fd47fc76fbecb585547b677b3ea142045c5d85101a0fc75882204f356ddb35a
160 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs and a prominent link within the document body that redirects to malicious infrastructure. The lure appears to be related to 'game hacks' and 'free currency', a common social engineering tactic. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the embedded URLs and the nature of the lure suggest a phishing or scam attempt.

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/406889139/coin-master-hack-coins-game-hack In PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/coin-master-free-stars_GM406889139.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/getting-my-roblox-account-hacked_GM431946152.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/100-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/how-to-hack-m-coins-mcpe-master_GM406889139.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/free-roblox-studio-ship-parts_GM431946152.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/roblox-artmoney-hacks_GM431946152.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/earn-robux-sites_GM431946152.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/freespinandcoinblogspotcom-2021-11-coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/how-to-actually-get-free-robux_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
stream_002_off0000318f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x318F 22772 bytes
SHA-256: 7455201b3d965df7243b94e35a956304810a7b0d8df501a70fc39391e32673e7
font_01_sfnt_off000064a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A7 18004 bytes
SHA-256: 2f3a5855c5bac228d8d27cc7f61b57eebad79d58a924e470a0477843dff273c7

Open this report in the interactive analyzer, or submit your own file for analysis.