Malicious PDF — malware analysis report

Static analysis result for SHA-256 8197d20fa22aa908…

MALICIOUS

PDF

44.3 KB Created: 2021-05-19 22:09:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 49e9a29e68d81226f463a48b361d1239 SHA-1: 7489d8873a302f717869b0ba939ca2678f1d33bf SHA-256: 8197d20fa22aa908f1e9f8c7049228fad9ef438879d371067cd64622ca72f39c
122 Risk Score

Malware Insights

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

This PDF document employs a lure related to 'free likes' for TikTok and impersonates Amazon to deceive users. It contains embedded links that redirect to a malicious domain, likely to download further malicious content or lead to credential phishing. The ML classifier strongly indicated maliciousness, and the presence of external URI redirects supports a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/835599320/tiktok-free-100-likes-game-hack.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/835599320/tiktok-free-100-likes-game-hack PDF link annotation
    • https://ciptawiratirta.com/assets/CKImages/files/how-to-log-out-of-coin-master_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/free-spins-coinmaster_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/coin-master-game-hacking_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/wurst-client-112-2_GM479516143.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/working-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/free-robux-earn_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/free-robux-app-real_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/how-to-get-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/install-coin-master_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/free-spins-coin-master-without-survey_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/how-to-get-free-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/ear-free-spins-for-coin-master_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000457e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x457E 27132 bytes
SHA-256: 82441f63f91e5fb68154cdf51dd464d2261f2dd8648089736f0d460991c2ebe2
font_01_sfnt_off0000822d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x822D 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off00008c3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C3D 17732 bytes
SHA-256: d3f724264e3985dc1dde7b9a63dbbf6387556dcda54e02681c1036ae3c3e2548

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