Malicious PDF — malware analysis report

Static analysis result for SHA-256 3262ad1a020124e4…

MALICIOUS

PDF

34.5 KB Created: 2021-06-26 17:14:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 3f7a52775e012df18c66740157335d05 SHA-1: a9ec08cf2868e6885e007d2fd8d780aa7f4aa573 SHA-256: 3262ad1a020124e4953ad7a6d492c24c9ce6fb08599ea7a6d639722c982e2092
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple heuristics indicating it is a malicious redirector lure, specifically targeting users interested in game hacks and in-game currency like 'Robux'. The document body and embedded URLs point to a primary redirector at 'http://netcdn.co/app/431946152/robux-hack-downlaod-game-hack', which is flagged as malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest a social engineering attack designed to lead users to potentially harmful websites.

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.co/app/431946152/robux-hack-downlaod-game-hack In PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-free-spins-and-coins-group_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-robot-verification_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-generator-hack_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/funny-faces-for-clothings-on-roblox-free_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/dragon-ball-rage-roblox-cheat-engine-hack_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-hack-apk-latest-version-2021_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-hack-app-ios_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/win-free-robux_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-free-spins-twitter_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_off00003080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3080 21948 bytes
SHA-256: 88e9811a0856d7350608f3c1846a854f9fb282cc3dde27e9c8f9c48816e23709
font_01_sfnt_off0000610c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x610C 19304 bytes
SHA-256: e7cdbb7080e2ec3d237667a443ca3f264ad9d70c4bff5b69f194e92be57c5ffb

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