Malicious PDF — malware analysis report

Static analysis result for SHA-256 d65686c099cd6be5…

MALICIOUS

PDF

42.9 KB Created: 2021-05-14 03:24:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: cd245ddf9d79808d2a0367ed1b02c699 SHA-1: 69e79507cf4d8c8c6bae464901f3233fd4cde392 SHA-256: d65686c099cd6be5260a3e0d0258b3ec77e5993e9f1a62075ede06e01542a451
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links to known malicious redirectors and lures users with promises of free game hacks or generators, such as 'Roblox Free Download'. The heuristic firings indicate that the PDF is designed to redirect users to potentially harmful content. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lures suggest a phishing or social engineering attack aimed at driving traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/431946152/roblox-free-download-game-hack In PDF document text
    • http://ristorantimaculan.it/images/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • http://ristorantimaculan.it/images/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://ristorantimaculan.it/images/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://ristorantimaculan.it/images/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://ristorantimaculan.it/images/coin-master-apk-mod-free-download_GM406889139.pdfIn PDF document text
    • http://ristorantimaculan.it/images/minecraft-free-school_GM479516143.pdfIn PDF document text
    • http://ristorantimaculan.it/images/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://ristorantimaculan.it/images/minecraft-complete-handbook_GM479516143.pdfIn PDF document text
    • http://ristorantimaculan.it/images/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://ristorantimaculan.it/images/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://ristorantimaculan.it/images/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://ristorantimaculan.it/images/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://ristorantimaculan.it/images/free-roebucks-no-human-verification_GM431946152.pdfIn PDF document text
    • http://ristorantimaculan.it/images/instant-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://ristorantimaculan.it/images/coin-master-attack-block-hack_GM406889139.pdfIn PDF document text
    • http://ristorantimaculan.it/images/coin-master-free-spins-and-coins-generator_GM406889139.pdfIn PDF document text
    • http://ristorantimaculan.it/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://ristorantimaculan.it/images/coin-master-real-hack_GM406889139.pdfIn PDF document text
    • http://ristorantimaculan.it/images/how-do-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://ristorantimaculan.it/images/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://rblx.landIn 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
stream_003_off00004b63.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B63 24596 bytes
SHA-256: 83212091ee89c9862203380a1ab20ad93d3c03e3d5ebd339cb34cc9ad9610ba7
font_01_sfnt_off0000841d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x841D 18680 bytes
SHA-256: 4713be9169544f6656b4c8be21c2a58d7eafaa04b5602a230b8b1e84fc41e5af

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