Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb272139d72bfaac…

MALICIOUS

PDF

47.8 KB Created: 2021-04-27 16:20:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 5de7f6774a9dcd1e87c1341081b06e3e SHA-1: 342ed22596d2f825acc4a018e1c745d79b7061e4 SHA-256: eb272139d72bfaaca56cb2ccb217fc940901f15a977e5463987e52caaed5fbf5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, with one prominently leading to a known malicious redirector infrastructure disguised as a game hack generator. The document body and embedded links suggest a lure for obtaining in-game currency or hacks, a common social engineering tactic. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector is the primary function.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

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/phantom-forces-roblox-coin-hack-game-hack In PDF document text
    • http://www.saburai.ac.id/elibrary//repository/free-stuff-on-roblox-mobile.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-redeem-toy-codes-free.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-hack-account-real.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/free-robux-codes-list-pastebin.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/create-own-free-skin-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/free-1-robux.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/assassin-roblox-hacked-uncopylocked.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/break-free-song-id-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-lumber-tycoon-tg-hacks.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/robux-earn-free.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_off00004412.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4412 38800 bytes
SHA-256: 3b01ca93f94aa8e67e5c71afc9c8a1d8ca3e1201f3c8bf9233c3bbc61ba10bb3
font_01_sfnt_off000097a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97A7 19152 bytes
SHA-256: f5c4241f9c15683b4ddfad9f62eab2e926b05e0af015651df67abc551c8b74be

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