Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1006dc570e8573c…

MALICIOUS

PDF

35.3 KB Created: 2021-06-27 18:06:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 29d9ce3094ed566b1620e2ba58035618 SHA-1: df944362e3a23458618c36e537f771313b6d738b SHA-256: f1006dc570e8573c528a5f35f653cede0a708f950583fbf843ccbbd2ba94dece
160 Risk Score

Malware Insights

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

This PDF document contains multiple links to malicious redirectors, disguised as game hacks and free spin generators. The primary link, http://netcdn.co/app/431946152/como-hackear-un-juego-de-roblox-desde-ordenador-game-hack, is flagged as malicious infrastructure. The document body and embedded URLs suggest a lure for users seeking in-game advantages, likely leading to further malware downloads or phishing attempts.

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.co/app/431946152/como-hackear-un-juego-de-roblox-desde-ordenador-game-hack In PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/free-roblox-premium_GM431946152.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/coin-master-free-spins-twitter_GM406889139.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/free-roblox-no-hack_GM431946152.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/the-free-game-roblox_GM431946152.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/free-draw-2-roblox_GM431946152.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/minecraft-apk-114_GM479516143.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/robux-gives-roblox-hack_GM431946152.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/daily-free-spins_GM406889139.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/hack-coin-master-android-game_GM406889139.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/how-to-get-free-robux-without-apps_GM431946152.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/roblox-promo-codes-2021-free_GM431946152.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/roblox-free-meme-clothes_GM431946152.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/legit-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/free-tiktok-likes-no-verification_GM835599320.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/login-robux_GM431946152.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
font_00_sfnt_off000031c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31C9 22380 bytes
SHA-256: 261b6b1121c5fdda374e60d36a35444329ba117d0db3699a7dc0bc7ff5eb4024
font_01_sfnt_off00006395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6395 19564 bytes
SHA-256: 4a4bae47e1742cf681d35683bef70492faac6fbf51f2c06d493f12cd96cc9eb9

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