Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c397e97922afbec…

MALICIOUS

PDF

34.6 KB Created: 2021-07-06 20:03:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 19ccca9ac0fe2b61d11a7e10e252dfb3 SHA-1: 83312ab71e26cd376ab44c422988f0f1792f0937 SHA-256: 2c397e97922afbece9bf2214301fc864cb270ee8eba718527f1bcec9d746a9fe
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a known malicious redirector, likely intended to deliver a second-stage payload. The document body and heuristics indicate a lure related to game hacks and free currency, a common social engineering tactic. No scripts were extracted, but the presence of malicious redirector links and the lure strongly suggest a phishing or malware distribution 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/431946152/free-robux-place-game-hack In PDF document text
    • https://mountainholidaytreks.com/userfiles/files/roblox-walk-through-walls-hack-download_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/roblox-captain-underpants-game-free_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/como-ser-hacker-en-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/i-didnt-get-my-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/is-minecraft-free-on-switch_GM479516143.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/how-to-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/minecraft-ore-finder-mod_GM479516143.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-robux-accounts-v3rmillion_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/coin-master-70-spin-link_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/spin-link_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/coin-master-free-spins-and-coins-for-today_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-robux-live_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-minecraft-shaders_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
font_00_sfnt_off00002fa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA7 22800 bytes
SHA-256: 278009925f46e9fce4ca5fffb51d0ddbaee1c4cd6b7b7c01d1c84f68099a0bb9
font_01_sfnt_off000062af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62AF 18944 bytes
SHA-256: b09bc8733bdd60a9e3d807131716c526420abed0d95e213ec937364ccfb38658

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