Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b95570cb6a2f088…

MALICIOUS

PDF

48.7 KB Created: 2021-05-14 15:02:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: c86295856af6055f7ab19e4891394ab8 SHA-1: 69e8973c4f9d7c39038fcada3654c6c91641d538 SHA-256: 7b95570cb6a2f088955ff66f7fa3e66e375e7ac3846687298edea517c9af03fe
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors, including one for a 'roblox-login-hack-game-hack'. The document body, though heavily obfuscated, contains references to game hacks and URLs that are consistent with a phishing or scam lure. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9228

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/431946152/roblox-login-hack-game-hack In PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-cheats-free-spins_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/robux-sign_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-hack-programers_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/best-tricks-co-robux_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/free-coins-coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-free-spins-link-blogspot-april-2021_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/download-coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/minecraft-client_GM479516143.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/get-free-spins-coin-master-october-2021_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/minecraft-java-free-account_GM479516143.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/free-robux-only-1-step_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c5f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C5F 29220 bytes
SHA-256: e359b183f9f0d7460b8d1815b08712554ee55265aaa8902c136e30deda6d1e97
font_01_sfnt_off00008ee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EE6 3632 bytes
SHA-256: db69ab27b8cee85d24b3ed501b737d1cf6bca8b95b0f556676dc07546eeb317a
font_02_sfnt_off00009b03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B03 18592 bytes
SHA-256: 4594c9d52aa6913ba89b547defae6e50b5d648d55ef93ab0faf484389542556d

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