Malicious PDF — malware analysis report

Static analysis result for SHA-256 354a55642e784ce2…

MALICIOUS

PDF

43.6 KB Created: 2021-05-11 17:30:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: b184754c4f62b65c5ec5f5d3ca97839a SHA-1: 62e9ef00159797a22c19e109e327c9f546eeec45 SHA-256: 354a55642e784ce26dd9eb5f37acb582ad41c4898cb00a113cd4f44a92676381
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a prominent link to a 'free generator / game hack' redirector, strongly suggesting a social engineering lure. The document body and extracted URLs indicate a phishing attempt focused on in-game currency and cheats for popular games. While no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a malicious redirection workflow, likely involving T1059.007 if JavaScript was used internally to facilitate the redirection.

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/free-spins-coin-master-cheats-game-hack PDF link annotation
    • http://iedarelief.us/images/how-to-use-redstone_GM479516143.pdfIn PDF document text
    • http://iedarelief.us/images/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://iedarelief.us/images/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/wurst-115_GM479516143.pdfIn PDF document text
    • http://iedarelief.us/images/how-to-get-free-snacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/free-unlimited-coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/gamehunters-club-coin-master_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/win-free-robux_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • http://iedarelief.us/images/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/roblox-re_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/free-robux-discord-servers_GM431946152.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_off00004754.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4754 24100 bytes
SHA-256: 462dac8a001182577c9c56eb6722e5caa186e210e2c9044dbc6b0857299f9903
font_01_sfnt_off00007e74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E74 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off0000885f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x885F 18052 bytes
SHA-256: 646ed736691e24b0aca15324257056c8ac0b7af913b76a93602a047b34ada573

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