Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa1a7e79fc57af0e…

MALICIOUS

PDF

45.1 KB Created: 2021-05-14 10:04:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 351b3e693626ba09fb42e942350b88a5 SHA-1: f4fecc5fd625267d2fecb607527d6216355321a3 SHA-256: fa1a7e79fc57af0eb3f8a404f7a5d405098a6d01baffbb66e660ca4c85723f34
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document employs a common lure of free game hacks and generators to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or exploits. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a potential for exploitation or redirection, aligning with common PDF-based malware delivery techniques.

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 https://netcdn.xyz/app/479516143/minecraft-pe-hack-client-game-hack In PDF document text
    • http://ristorantimaculan.it/images/free-robux-site_GM431946152.pdfIn PDF document text
    • http://ristorantimaculan.it/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://ristorantimaculan.it/images/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
    • http://ristorantimaculan.it/images/coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://ristorantimaculan.it/images/coin-master-real-hack_GM406889139.pdfIn PDF document text
    • http://ristorantimaculan.it/images/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://ristorantimaculan.it/images/coin-master-free-coins--spins_GM406889139.pdfIn PDF document text
    • http://ristorantimaculan.it/images/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
    • http://ristorantimaculan.it/images/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • http://ristorantimaculan.it/images/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://ristorantimaculan.it/images/free-robux-co_GM431946152.pdfIn PDF document text
    • http://ristorantimaculan.it/images/free-coins-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://ristorantimaculan.it/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://ristorantimaculan.it/images/roblox-avatar-com_GM431946152.pdfIn PDF document text
    • http://ristorantimaculan.it/images/free-minecraft-website_GM479516143.pdfIn PDF document text
    • http://ristorantimaculan.it/images/coin-master-game-free-download_GM406889139.pdfIn PDF document text
    • http://ristorantimaculan.it/images/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://ristorantimaculan.it/images/minecraft-complete-handbook_GM479516143.pdfIn PDF document text
    • http://ristorantimaculan.it/images/free-roblox-groups-with-funds_GM431946152.pdfIn PDF document text
    • http://ristorantimaculan.it/images/hackear-coin-master-espaol_GM406889139.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_off00004e8b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E8B 29632 bytes
SHA-256: 2051531cbfaa88754509e3d587eb08f410d818e04e440e53a465d917adc168d4
font_01_sfnt_off00008fa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FA3 17968 bytes
SHA-256: a1bdeaf7b929e0321b1dbbf2b8f1cbdbbbd0c833166bb9e07af12e4b4538f125

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