Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ba30178ba38ea1a…

MALICIOUS

PDF

35.0 KB Created: 2021-06-29 00:04:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 42d01a59b1e37fdb49422101f2fe2f9d SHA-1: d0e82c9db602fe3184a61506488e8d91735ed2d4 SHA-256: 1ba30178ba38ea1aa382c34c9fca4984dbfb0a4ab652937c8357482e00214458
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically advertising game hacks and generators. The heuristic firings indicate that the document is designed to lure users into clicking these links, likely leading to further malware downloads or phishing attempts. No scripts were extracted, but the presence of malicious redirector links and the ML classification strongly suggest a malicious intent.

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/roblox-prison-life-gui-hacks-pastebin-game-hack In PDF document text
    • http://opac.salatiga.go.id/slims7//repository/what-is-pubg-uc_GM1330123889.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/snip-roblox-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/coin-master-hack-tool-v1-9-apk_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-www-com_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/keyword-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-hack-roblox-step-by-step_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-get-a-dominus-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-murder-mystery-codes-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-quiz_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-fix-roblox-hacks-wikihow_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-do-u-get-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-auto-clicker-for-mac-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/game-roblox-free-play_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F61 23124 bytes
SHA-256: 1a92a9e8309498cec63e69713669dbfa61d96af8f85fc37b8a7ff8d0fb23b479
font_01_sfnt_off00006384.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6384 19176 bytes
SHA-256: 5a4090734e9d4a48c1a06516c84080ec678d0730d817567495c5d0aca8a90565

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