Malicious PDF — malware analysis report

Static analysis result for SHA-256 6af02a0e7d874dcf…

MALICIOUS

PDF

41.7 KB Created: 2021-05-15 01:03:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: e291d20f76d8455a54f0fffec61a70cb SHA-1: 93a991595f74020a3da066a6f44680d81db59437 SHA-256: 6af02a0e7d874dcfcabf40172229b66b6c1fc878f331d9bf4a18586051cc0a1a
160 Risk Score

Malware Insights

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

The PDF contains multiple links to websites offering game hacks and free currency, identified by heuristics as malicious redirectors. The document body and extracted URLs suggest a lure for users interested in obtaining in-game advantages, which is a common tactic for distributing malware or leading to phishing sites. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/coin-master-heaven-links-free-spins-game-hack In PDF document text
    • http://fishtech.is/images/free-robux-come_GM431946152.pdfIn PDF document text
    • http://fishtech.is/images/roblox-exploit-download_GM431946152.pdfIn PDF document text
    • http://fishtech.is/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://fishtech.is/images/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://fishtech.is/images/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://fishtech.is/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://fishtech.is/images/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdfIn PDF document text
    • http://fishtech.is/images/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • http://fishtech.is/images/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://fishtech.is/images/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://fishtech.is/images/coin-master-hack-tool-ios_GM406889139.pdfIn PDF document text
    • http://fishtech.is/images/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://fishtech.is/images/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://fishtech.is/images/roblox-free-item-codes_GM431946152.pdfIn PDF document text
    • http://fishtech.is/images/e-free-roblox_GM431946152.pdfIn PDF document text
    • http://fishtech.is/images/coin-master-cards-for-free_GM406889139.pdfIn PDF document text
    • http://fishtech.is/images/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://fishtech.is/images/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
    • http://fishtech.is/images/https-iosgodscom-topic-20214coinmasterhack_GM406889139.pdfIn PDF document text
    • http://fishtech.is/images/coin-master-20-free-spins-link-2021_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004975.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4975 24480 bytes
SHA-256: fe9d4a8848772099a0efde4449bce85d98de976df9b37a27fce7f2f45686f4aa
font_01_sfnt_off000080ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80FF 18168 bytes
SHA-256: 027d16a1c60dbd0eb1df4048bc3da2018b11e953b841f7f45fc354c272db0dc4

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