Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0192b6c6c34cc07…

MALICIOUS

PDF

41.9 KB Created: 2021-05-16 01:47:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: b2bcb823e005060aae5badf5da8a4a72 SHA-1: 618d9ecf81fc6a81b84acc514354862982b7567c SHA-256: b0192b6c6c34cc0752c990f00941d84814bc65c7e3bd29327501f9cd99a1e0a9
200 Risk Score

Malware Insights

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

This PDF document employs a common lure of free game currency and hacks to trick users into clicking malicious links. The document displays a fake CAPTCHA to coerce users into interacting with the content, likely leading to a redirect to malicious infrastructure. The embedded URLs point to known redirectors and pages offering game-related cheats, further supporting the phishing and social engineering attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/coin-master-game-hack-app-game-hack In PDF document text
    • http://hospitalsalamanca.cl/images/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/robux-free-co_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/how-can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/202100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/minecraft-java-account-free_GM479516143.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/roblox-rewards-site_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/coin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/minecraft-free-demo_GM479516143.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/coin-master-35-13-hack-download_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://hospitalsalamanca.cl/images/minecraft-free-ios-2021_GM479516143.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
stream_003_off00004833.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4833 25016 bytes
SHA-256: 067c5da93553ce6d9df4301c45fd6d2b1263a6f78704754358f67576fe46312f
font_01_sfnt_off000081de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81DE 18152 bytes
SHA-256: a9beebf818d5886f30c9f2ca3dea49ae6ba882c6c1da3ca8fee2aac0910a50ab

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