Malicious PDF — malware analysis report

Static analysis result for SHA-256 3273f57f71d9fda7…

MALICIOUS

PDF

34.6 KB Created: 2021-06-25 11:59:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2dc7718e141480e7d63b9d68056ac69d SHA-1: 176dc3ed923a629f3b310da72913b8de2d8ff8b0 SHA-256: 3273f57f71d9fda7ee7f2a5afec67d45570c7c47ebb8f9478ddc5d634934e088
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-roblox-deadpool-suit-game-hack PDF link annotation
    • https://www.e-starmagazine.com/uploads/files/roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/code-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/minecraft-free-reddit_GM479516143.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-master-spins-free-2021_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/roblox-assassin-free-knives_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/freespinandcoin-blogspot-com_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/free-spins-and-coins-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/how-to-get-free-spins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/free-bling-bling-card-coin-master_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-master-spin-ml_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/games-for-robux_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/free-robux-group_GM431946152.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_off00002f3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F3C 22344 bytes
SHA-256: dec7051888650d6b0ee2705fb4961d2370c060255b6eb387100ce899840eddd3
font_01_sfnt_off000060ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60AB 19532 bytes
SHA-256: 12cac6ebf1391e74511b23bd7f934852f427134e9c95768c4e81f4b67d062a2f

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