Malicious PDF — malware analysis report

Static analysis result for SHA-256 27dfd1458109441f…

MALICIOUS

PDF

33.0 KB Created: 2021-06-19 14:51:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3589f09bba6d4c3ff7190fde62fbeda9 SHA-1: 981d046534bce9e86cca5c6e021cfd7ff64fdbe0 SHA-256: 27dfd1458109441fc5d0f3e401e62f3b8145360a0837534642ba0981313e925a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs that redirect to websites offering game hacks and free in-game items, a common lure for phishing or malware distribution. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an intent to redirect the user to potentially malicious external content.

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/835599320/hack-tiktok-fans-free-game-hack PDF link annotation
    • http://sttlets.education/senayan/repository/free-spins-and-coins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/tiktok-unicorn-free-download_GM835599320.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-500-tiktok-views_GM835599320.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/pokemon-go-free-coins-hack_GM1094591345.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-to-get-free-tiktok-hearts_GM835599320.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/coin-master-free-food_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/coin-master-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/todays-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-robux-master_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/play-store-roblox-free_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-robux-instantly-100-real_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/roblox-for-free-on-ps4_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/coin-master-hacksco_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/twitter-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/roblox-com-redeem_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_off00002f11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F11 21732 bytes
SHA-256: 42adcb4b16811139570ad6903d3dc07cc57b578004f3468574e234ec60b42b7d
font_01_sfnt_off00005f04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F04 17972 bytes
SHA-256: cbf511658f8c7d43879ce596dc899d88656b9bb3a8965c58cd12d8a6f18962fc

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