Malicious PDF — malware analysis report

Static analysis result for SHA-256 673c5c782aab1f0c…

MALICIOUS

PDF

33.5 KB Created: 2021-06-25 03:08:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 00f051c81b467bafdcdf7fcffebf4420 SHA-1: c078eec3b99f5e20986700fe4156516fd12b6d4d SHA-256: 673c5c782aab1f0c41de14ee5de3038cf648f20d404f92e88a31b592c979a9e8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/free-robux-app-hack-game-hack PDF link annotation
    • http://xn--apartementos-smfora-cala-ratjada-4vc.de/images/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://xn--apartementos-smfora-cala-ratjada-4vc.de/images/without-tiktok-free-fire_GM835599320.pdfIn PDF document text
    • http://xn--apartementos-smfora-cala-ratjada-4vc.de/images/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • http://xn--apartementos-smfora-cala-ratjada-4vc.de/images/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://xn--apartementos-smfora-cala-ratjada-4vc.de/images/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://xn--apartementos-smfora-cala-ratjada-4vc.de/images/free-pet-treats-coin-master_GM406889139.pdfIn PDF document text
    • http://xn--apartementos-smfora-cala-ratjada-4vc.de/images/roblox-yin-vs-yang-cheat_GM431946152.pdfIn PDF document text
    • http://xn--apartementos-smfora-cala-ratjada-4vc.de/images/roblox-royale-high-hack-2021_GM431946152.pdfIn PDF document text
    • http://xn--apartementos-smfora-cala-ratjada-4vc.de/images/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://xn--apartementos-smfora-cala-ratjada-4vc.de/images/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://xn--apartementos-smfora-cala-ratjada-4vc.de/images/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://xn--apartementos-smfora-cala-ratjada-4vc.de/images/roblox-fortnite-simulator-hack_GM431946152.pdfIn PDF document text
    • http://xn--apartementos-smfora-cala-ratjada-4vc.de/images/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • http://xn--apartementos-smfora-cala-ratjada-4vc.de/images/roblox-snow-shoveling-simulator-how-to-get-free-money_GM431946152.pdfIn PDF document text
    • http://xn--apartementos-smfora-cala-ratjada-4vc.de/images/free-robux-without-having-to-download-anything_GM431946152.pdfIn PDF document text
    • http://xn--apartementos-smfora-cala-ratjada-4vc.de/images/free-roblox-items-codes_GM431946152.pdfIn PDF document text
    • http://xn--apartementos-smfora-cala-ratjada-4vc.de/images/robux-free-c_GM431946152.pdfIn PDF document text
    • http://xn--apartementos-smfora-cala-ratjada-4vc.de/images/how-to-find-out-who-hacked-your-roblox_GM431946152.pdfIn PDF document text
    • http://xn--apartementos-smfora-cala-ratjada-4vc.de/images/wwrobux-giver-free-com_GM431946152.pdfIn PDF document text
    • http://xn--apartementos-smfora-cala-ratjada-4vc.de/images/roblox-escape-room-free-access-code_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E9 20908 bytes
SHA-256: 5e433bdd019e0b6462d5b76b7b80530f01a44c55e7263d8609bb06393ea647f6
font_01_sfnt_off00005e00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E00 19064 bytes
SHA-256: 0a603132c2e4361f6e0ed90969d58c8413b633373b5c25bf9741f7df88b82a35

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