Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0e1140a89987522…

MALICIOUS

PDF

40.9 KB Created: 2021-05-10 17:33:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 31a883d6f9888e94922b7177a449375f SHA-1: 31ba4ba718c3dab419eaf3f3c4cd9d0c3d3da92e SHA-256: e0e1140a89987522bfb724fab54b9a58f2cc721eaa099f216b735a72002a262d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and cheats. The heuristic firings confirm these links point to known malicious redirectors and a lure for game generators. While no scripts were explicitly extracted, the PDF structure itself contains embedded URLs and actions that facilitate redirection, suggesting an attempt to lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/how-to-get-free-gold-cards-on-coin-master-game-hack In PDF document text
    • http://www.gadanie.lv/images/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/free-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/free-robux-today_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/coin-master-website_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://www.gadanie.lv/images/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/coin-master-gold-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/150-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/heroes-online-roblox_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/coin-master-hack-unlimited-spins-and-coins-cheats_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/coin-master-village-3_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
stream_003_off0000476f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x476F 24416 bytes
SHA-256: 9b511db840aa035e06dce2d3893215449da64bb205915d696db69a8b56e19bf7
font_01_sfnt_off00007e32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E32 18120 bytes
SHA-256: 85f8eff0e5be39dd6e757275040d7635a401f73e30a8ce7b7e853b4f47487c02

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