Malicious PDF — malware analysis report

Static analysis result for SHA-256 89cceb96334872f4…

MALICIOUS

PDF

34.4 KB Created: 2021-06-18 23:59:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 6a13ab9ea637a4f704312aae290df76f SHA-1: 267730c334ab5eeadc6069ddcbcb1f278df5625f SHA-256: 89cceb96334872f4e8eedadec710053107d65626f5771f9b01f1f262c2c34743
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple embedded URLs that redirect to malicious infrastructure, specifically promoting 'free Robux' or game hacks. The heuristic firings confirm these links lead to known malicious redirectors and a game hack lure. The document body and embedded URLs strongly suggest a phishing attempt to trick users into visiting malicious sites, likely to download further malware or steal credentials.

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/free-robux-real-working-2021-game-hack In PDF document text
    • http://perpus.ar-rum.ac.id/repository/which-are-the-best-free-level-7-exploits-for-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-apk-hack-32_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/minecraft-free-demo_GM479516143.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/websites-for-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-roblox-clothes-girl_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-guest-666-shirt-free_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-villages_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-hacker-2021-free-download_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-hack-app-2021-download_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/wearedevs-roblox-hack_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
font_00_sfnt_off00002ef5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF5 21944 bytes
SHA-256: 7605a6789d79a66843de5a5062b1c045b3f9248b550d3f9e222537b34844732a
font_01_sfnt_off00005f87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F87 19680 bytes
SHA-256: 76267559f3eab766263e25e467467fd28f13b8ced525d4f4ea246896f115941d

Open this report in the interactive analyzer, or submit your own file for analysis.