Malicious PDF — malware analysis report

Static analysis result for SHA-256 171d0990f17ff336…

MALICIOUS

PDF

44.3 KB Created: 2021-05-17 04:14:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: e5435c37b9729b14ec4de6562d7af1f0 SHA-1: bbeece7211ed22f3e2ae11416d9a5f5f0c70104e SHA-256: 171d0990f17ff336f389c0cc0f52f70b45b4a46097ea61fe9e99db2d94a1dde9
160 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, disguised as a "free generator / game hack". This lure is designed to trick users into navigating to a site that likely serves further malicious content or attempts to phish for information. The ML classifier also strongly indicated maliciousness.

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 https://netcdn.xyz/app/431946152/free-roblox-gift-card-codes-2021-unused-game-hack In PDF document text
    • http://www.aqas.it/images/free-minecraft-mods-for-ps4_GM479516143.pdfIn PDF document text
    • http://www.aqas.it/images/coin-master-hack-app-2021-download_GM406889139.pdfIn PDF document text
    • http://www.aqas.it/images/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.aqas.it/images/download-coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.aqas.it/images/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.aqas.it/images/coin-master-500-free-spins_GM406889139.pdfIn PDF document text
    • http://www.aqas.it/images/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://www.aqas.it/images/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • http://www.aqas.it/images/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • http://www.aqas.it/images/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.aqas.it/images/download-apps-for-robux_GM431946152.pdfIn PDF document text
    • http://www.aqas.it/images/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://www.aqas.it/images/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.aqas.it/images/will-minecraft-ever-be-free_GM479516143.pdfIn PDF document text
    • http://www.aqas.it/images/coin-master-free-daily-rewards_GM406889139.pdfIn PDF document text
    • http://www.aqas.it/images/how-to-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.aqas.it/images/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://www.aqas.it/images/minecraft-xbox-one-edition-digital-code-free_GM479516143.pdfIn PDF document text
    • http://www.aqas.it/images/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.aqas.it/images/http-bit-ly-coin-master-hack_GM406889139.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
stream_003_off000049ee.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49EE 26700 bytes
SHA-256: 80f483b2341f8b4f548e7d46be969f2e4c7e747eb698801e3edb3a90cd570eca
font_01_sfnt_off000087b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87B3 19304 bytes
SHA-256: d6f20b3ebf518ac20c616d793a05e273db5ac27cf7bb96dde15642c09c9075e4

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