Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a801aefd38d70ec…

MALICIOUS

PDF

49.1 KB Created: 2021-05-16 08:24:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: d435c0416c03757d1f38d4b19d8eebfe SHA-1: 34fdfecf6ca599830086002de4296aa70fbd5542 SHA-256: 6a801aefd38d70ec822a2d52af936bebe3e99a8d92c2345b05f66d6138cd3429
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as "game hacks" and "free generators" to lure users. The document body, though partially corrupted, contains a URL pointing to a "game hack" page. The presence of these malicious links and the ML classifier's high confidence score indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8642

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/479516143/how-to-download-minecraft-for-free-on-mac-game-hack In PDF document text
    • http://solidcom.ch/images/coin-master-free-2021-spin-link-today_GM406889139.pdfIn PDF document text
    • http://solidcom.ch/images/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://solidcom.ch/images/minecraft-pe-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://solidcom.ch/images/coin-master-freebies-2021_GM406889139.pdfIn PDF document text
    • http://solidcom.ch/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://solidcom.ch/images/coin-master-34-6-hack_GM406889139.pdfIn PDF document text
    • http://solidcom.ch/images/how-to-get-free-cards-sets-for-coin-master_GM406889139.pdfIn PDF document text
    • http://solidcom.ch/images/google-play-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://solidcom.ch/images/free-minecraft-skin-creator_GM479516143.pdfIn PDF document text
    • http://solidcom.ch/images/coin-master-34-4-hack_GM406889139.pdfIn PDF document text
    • http://solidcom.ch/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://solidcom.ch/images/coin-master-hack-cydia_GM406889139.pdfIn PDF document text
    • http://solidcom.ch/images/free-spins-coin-master-2021-glitch_GM406889139.pdfIn PDF document text
    • http://solidcom.ch/images/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://solidcom.ch/images/microsoft-robux_GM431946152.pdfIn PDF document text
    • http://solidcom.ch/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://solidcom.ch/images/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://solidcom.ch/images/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://solidcom.ch/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://solidcom.ch/images/is-minecraft-free-on-switch_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004863.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4863 28864 bytes
SHA-256: faf68f1a6520ee6f0de78b5eeb557c586ae15c9b140df09a98cd3aebe5e3c333
font_01_sfnt_off00008908.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8908 3020 bytes
SHA-256: f1a29adcea636583330be8db4f6466410de551ac48576b9e1aa5c34e2d665a1f
font_02_sfnt_off0000935d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x935D 2816 bytes
SHA-256: 4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f
font_03_sfnt_off00009d6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D6E 18292 bytes
SHA-256: 5130427873d9275259bc23122af53847ba8d90dc149b772f5578788f281f3faa

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