Malicious PDF — malware analysis report

Static analysis result for SHA-256 44a021eaa1dba0b6…

MALICIOUS

PDF

43.8 KB Created: 2021-06-13 20:24:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0d28b7599441b1b871641f9f589c6eb8 SHA-1: f3403072c648641f25412a5aa49c36ab2bfd9ccf SHA-256: 44a021eaa1dba0b66e7a1b537e9abdc08d236357f437f974eb8d12f25173728b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs and a lure in the document body promising free game currency or hacks. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' specifically flags this type of social engineering. The ML classifier also strongly indicated maliciousness. The embedded URLs likely lead to phishing sites or malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/get-free-robux-fast-and-easy-no-offer-no-verification-game-hack PDF link annotation
    • http://asiasieja.pl/images/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://asiasieja.pl/images/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • http://asiasieja.pl/images/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/free-robux-co_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/pokemon-go-free-30-ultra-balls_GM1094591345.pdfIn PDF document text
    • http://asiasieja.pl/images/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • http://asiasieja.pl/images/how-to-get-free-bloxburg-in-roblox_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/program-hack-roblox_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/cm-spins_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/roblox-hack-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/coin-master-free-spins-april-2021_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
font_00_sfnt_off00004c0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C0E 25224 bytes
SHA-256: 745e083104446b4bdc0fcf2b543a1e500944094e9aa8fb152f84afbdd9855e1d
font_01_sfnt_off000086a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86A0 18952 bytes
SHA-256: 622b9c4f755bafe2d3aa338c3fc9206871e2f29a90a4ce6ded14062f36001a46

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