Malicious PDF — malware analysis report

Static analysis result for SHA-256 6790edc538337dd1…

MALICIOUS

PDF

35.1 KB Created: 2021-07-04 05:17:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 63ccf66857a24f4ef35db95cc9013402 SHA-1: c7c3ab0258c77be82577f6dc33123a6e66b71b12 SHA-256: 6790edc538337dd11d695202454f8bd6e50c83b17c68ea2f61ba7a8b458fd979
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The ML classifier also flagged this PDF as malicious with high confidence. The embedded URLs and the document body content strongly suggest a phishing or scam attempt to trick users into visiting malicious sites.

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.tw/app/431946152/hacks-to-get-free-robux-game-hack In PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/how-do-u-get-robux_GM431946152.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/free-roblox-toy-codes-not-used_GM431946152.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/august-9-2021-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/roblox-gang_GM431946152.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/console-hack-roblox_GM431946152.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/youtube-how-to-get-free-roblox-75k_GM431946152.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/roblox-retail-tycoon-money-hack-2021_GM431946152.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/free-coins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/haxteamcf-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/free-robux-time-glitch_GM431946152.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/como-hackear-cuentas-roblox_GM431946152.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/roblox-cheat-engine-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/files/10-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://learning.ma-negerikarimun.sch.id/__statics/gudangsoal/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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000342a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x342A 21956 bytes
SHA-256: f90c25f12830c4594ca70f5a3f3e7dfbc2c7434c8ea3693dc00aaff643a36971
font_01_sfnt_off00006467.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6467 18992 bytes
SHA-256: a46b776bb67c7b468de6bb210db8cc3c07a9aad6d9a2155761eaac94cf23c7ac

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