Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fc6c2010ece76d3…

MALICIOUS

PDF

47.9 KB Created: 2021-06-10 22:34:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 959f7ea7204d351a888bfe80e1ac1836 SHA-1: 9dfc08baebb6f1c597872addb43858494e2725b9 SHA-256: 5fc6c2010ece76d3634503db4cae800a4a0db4e45dce5c95617384776833c407
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The document body, though partially corrupted, contains references to game hacks and includes URLs that are likely part of a campaign to drive traffic to potentially malicious sites. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

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.tw/app/431946152/money-hack-for-roblox-vehicle-simulator-game-hack In PDF document text
    • https://deutsch-study.com/image/data/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/roblox-noclip-hack-december-2021_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coin-master-free-box_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/how-to-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-robux-co_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-spins-coin-master-links-no-human-verification_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/roblox-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/how-to-get-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/more-robux_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coin-master-hack-mod-apk-android-1_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/hack-game-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_004_off0000541d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x541D 28540 bytes
SHA-256: bca173a92c6e3732263a1e19c1ca58f961326a02c59bea2ebda899558a7fea1f
font_01_sfnt_off00009534.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9534 19644 bytes
SHA-256: ca800db116fe643684a58d798720e509ca358e4f9f7bfa69759ec1df330c503a

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