Malicious PDF — malware analysis report

Static analysis result for SHA-256 e23f7e8f3a44121c…

MALICIOUS

PDF

44.0 KB Created: 2021-05-10 20:08:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d095c2cc1788a30752f25ffd3b00bd86 SHA-1: 62398658dc5cab4c1e9e6d17de0748ce7a5a00cc SHA-256: e23f7e8f3a44121cb6827692ea14f484ffb3ce1cac731eb121c2e1ae5be058ab
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links that redirect to websites promising game hacks and free currency, such as 'coin-master-free-coins-link-blogspot-game-hack'. The ML classifier also flagged this PDF as malicious. These links are the primary indicators of malicious intent, likely serving as a lure to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/406889139/coin-master-free-coins-link-blogspot-game-hack PDF link annotation
    • http://ipdrs.org/images/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/minecraft-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://ipdrs.org/images/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://ipdrs.org/images/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/master-free-spin_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/coin-master-website_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/coin-master-2021-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://ipdrs.org/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/roblox-earn-robux_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/free-spin-appscoin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000476b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x476B 24264 bytes
SHA-256: db1c9667bc40cde998eac47c0973601d54f34fe1f14f3531cb2e96f19e0ab812
font_01_sfnt_off00007e65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E65 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008850.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8850 18632 bytes
SHA-256: 25a48d095538c21b3574d128913f1d88808f27fbb4560e17bb648f934a14342e

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