Malicious PDF — malware analysis report

Static analysis result for SHA-256 619932cf551f19b6…

MALICIOUS

PDF

35.5 KB Created: 2021-07-04 12:50:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: c2bce43ce4c64da71015cde2990b21a2 SHA-1: f0843952e820db58dad46b658562e1b5ca3f38e9 SHA-256: 619932cf551f19b66b195c5f2169adc5089e2cc1bfd41c5276ec084de1a887df
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, including one pointing to a known malicious redirector infrastructure. The document body and heuristics suggest a lure for game-related cheats or currency, likely leading to a phishing or malware download site. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of malicious intent.

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/406889139/coin-master-free-download-for-pc-game-hack In PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/best-free-hacked-client_GM479516143.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/reddit-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/omplete-surveys-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/coin-master-cards-free-cards_GM406889139.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/coin-master-viking-quest-hack_GM406889139.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/robux-earning-sites_GM431946152.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/claimrobux-net_GM431946152.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/coin-master-cheats-without-verification_GM406889139.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://mialfalahkanigoroblitar.sch.id/__statics/gudangsoal/files/free-robux-free-cards_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
stream_002_off0000330b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x330B 22956 bytes
SHA-256: 11335cbaf50f784f3432cb7cdbc987675fc42c1e407b0a0cb3e2aa57d3796d3d
font_01_sfnt_off000066ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66CE 18732 bytes
SHA-256: c019ed8ec51aec11cfd4435d098065b50ba7db79618555f513e678a421f3226a

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