Malicious PDF — malware analysis report

Static analysis result for SHA-256 a56fc9a90f913440…

MALICIOUS

PDF

42.5 KB Created: 2021-05-16 00:33:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5ef4d464e76be47b77b78adada085283 SHA-1: 557627cec0bc114f978294e145fd94ea78161b3b SHA-256: a56fc9a90f913440a86e00f6e7a4d13c5f632de81a42d3a9d4112b1fd59a99e3
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 game hacks and generators. The document body and embedded URLs strongly suggest a lure for users seeking in-game advantages, which is a common social engineering tactic. The ML classifier also flagged this PDF as malicious with high confidence.

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-claim-spins-game-hack In PDF document text
    • http://sebastiaanshoeve.nl/images/robux-game_GM431946152.pdfIn PDF document text
    • http://sebastiaanshoeve.nl/images/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://sebastiaanshoeve.nl/images/legit-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://sebastiaanshoeve.nl/images/roblox-online-free_GM431946152.pdfIn PDF document text
    • http://sebastiaanshoeve.nl/images/coinmasterfreespins_GM406889139.pdfIn PDF document text
    • http://sebastiaanshoeve.nl/images/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • http://sebastiaanshoeve.nl/images/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://sebastiaanshoeve.nl/images/free-coin-spin-daily-link-coin-master_GM406889139.pdfIn PDF document text
    • http://sebastiaanshoeve.nl/images/free-draw-roblox_GM431946152.pdfIn PDF document text
    • http://sebastiaanshoeve.nl/images/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://sebastiaanshoeve.nl/images/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://sebastiaanshoeve.nl/images/my-robux_GM431946152.pdfIn PDF document text
    • http://sebastiaanshoeve.nl/images/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://sebastiaanshoeve.nl/images/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://sebastiaanshoeve.nl/images/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • http://sebastiaanshoeve.nl/images/coin-master-free-spins-link-facebook-page_GM406889139.pdfIn PDF document text
    • http://sebastiaanshoeve.nl/images/how-can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://sebastiaanshoeve.nl/images/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://sebastiaanshoeve.nl/images/2021-no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://sebastiaanshoeve.nl/images/oprewards-robux_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_003_off000047f4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47F4 26396 bytes
SHA-256: 138906c892d1356df63010fe6bf2fa875ee498f4721d6313e914dc677e6e2964
font_01_sfnt_off00008482.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8482 18056 bytes
SHA-256: 910bba4e9b8698471f084902004854848b7ccdb185fd175879c14395f4b2f674

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