Malicious PDF — malware analysis report

Static analysis result for SHA-256 e270c64129f78782…

MALICIOUS

PDF

35.0 KB Created: 2021-07-03 13:05:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: ab50243402b591bf913e2463811bbb62 SHA-1: d269b1b2bca7525f01a7b9f1b10d044095060b65 SHA-256: e270c64129f7878272e3d90e33ee116eacc4da273e4c857dfe701850fda245f9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising free generators for games like Coin Master and Roblox. The document body and embedded URLs indicate a lure for users seeking in-game advantages, which is a common social engineering tactic. The presence of multiple redirector links suggests an attempt to funnel users to potentially malicious sites for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/free-spins-coin-master-site-wwwquoracom-game-hack In PDF document text
    • https://weddingcards-expert.tw/upload/files/hack-master-coin_GM406889139.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/roblox-shaded-shirt-template-free-shipping_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/rare-free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/free-spins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/eran-robux-free-robux-vrobux-com_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/roblox-scripts-for-games-hack_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/code-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/free-script-executor-roblox_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/roblox-ro-goul-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/get-free-robux-website_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/bux-free-robux_GM431946152.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • https://weddingcards-expert.tw/upload/files/how-to-hack-in-roblox-2021_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_off00003090.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3090 22720 bytes
SHA-256: 3f117ec40bb6283ccf1f1854f66077341ffbf7e0453e41ae84c587141758db60
font_01_sfnt_off00006391.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6391 19104 bytes
SHA-256: fc30aa2e2a167ce135325b7658ffcbb18d3491c1f0a21183f94466ed71bfe57d

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