Malicious PDF — malware analysis report

Static analysis result for SHA-256 754c47f3ae377cb8…

MALICIOUS

PDF

43.2 KB Created: 2021-05-14 16:33:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4462e63466b0fe4b529d423377b9217f SHA-1: 7f5235b09681dd114bd372e0c9455292520785e5 SHA-256: 754c47f3ae377cb8f9de53080614f8e919f1e7da740e6a171ebc4a6dfaa11bd9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free generator / game hack' content. The document body, though partially corrupted, contains references to 'Coin Master Free Spins And Coins' and includes the primary malicious URL. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves luring users to malicious sites via social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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-free-spins-and-coins-link-blogspot-game-hack In PDF document text
    • http://arthakranti.org/images/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • http://arthakranti.org/images/100-robux_GM431946152.pdfIn PDF document text
    • http://arthakranti.org/images/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://arthakranti.org/images/coin-master-free-spin-and-coin-link-app_GM406889139.pdfIn PDF document text
    • http://arthakranti.org/images/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://arthakranti.org/images/minecraft-jar-free_GM479516143.pdfIn PDF document text
    • http://arthakranti.org/images/coin-master-official-fan-page_GM406889139.pdfIn PDF document text
    • http://arthakranti.org/images/coin-master-free-daily-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://arthakranti.org/images/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • http://arthakranti.org/images/mcpe-com_GM479516143.pdfIn PDF document text
    • http://arthakranti.org/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://arthakranti.org/images/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://arthakranti.org/images/free-minecraft-windows-10-account_GM479516143.pdfIn PDF document text
    • http://arthakranti.org/images/roblox-imagine_GM431946152.pdfIn PDF document text
    • http://arthakranti.org/images/robux-online_GM431946152.pdfIn PDF document text
    • http://arthakranti.org/images/coin-master-free-spin-game_GM406889139.pdfIn PDF document text
    • http://arthakranti.org/images/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://arthakranti.org/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://arthakranti.org/images/daily-coin-master-free-spin-link-facebook_GM406889139.pdfIn PDF document text
    • http://arthakranti.org/images/how-to-get-minecraft-for-free-on-chromebook_GM479516143.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_off00004927.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4927 26160 bytes
SHA-256: 7ac1b69edba50de2a61923637b493b4db746909c88be4590caa21c6e7bf30e77
font_01_sfnt_off00008526.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8526 18808 bytes
SHA-256: 03b21e015184c6ee707266379cca5c27191cb89bc46cd5e8ba76e84d1a33d40b

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