Malicious PDF — malware analysis report

Static analysis result for SHA-256 925cfaae33705296…

MALICIOUS

PDF

35.4 KB Created: 2021-06-29 00:27:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 2b834ecd57b3f416b8cbc9b1597d20a8 SHA-1: cba6dfe783aece86777047c748cae462c04079ff SHA-256: 925cfaae337052965c1bd89280ac1498ed4da9e737315d25541aefd55777ab69
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exploits common gaming lures to trick users into clicking malicious links. The primary link, http://netcdn.co/app/431946152/free-download-roblox-for-kids-on-laptop-game-hack, is identified as a malicious redirector. The document's content and embedded URLs strongly suggest a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

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.co/app/431946152/free-download-roblox-for-kids-on-laptop-game-hack In PDF document text
    • https://www.e-learningman16jakarta.com/__statics/gudangsoal/files/roblox-themepark-tycoon-hacked_GM431946152.pdfIn PDF document text
    • https://www.e-learningman16jakarta.com/__statics/gudangsoal/files/coin-master-cards-free_GM406889139.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/free-robux-master_GM431946152.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/coin-master-hack-app-android_GM406889139.pdfIn PDF document text
    • https://www.e-learningman16jakarta.com/__statics/gudangsoal/files/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • https://www.e-learningman16jakarta.com/__statics/gudangsoal/files/roblox-jailbreak-hackfree-unlimited-money-cheats_GM431946152.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-learningman16jakarta.com/__statics/gudangsoal/files/free-robux-site-bz_GM431946152.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.e-learningman16jakarta.com/__statics/gudangsoal/files/i-didnt-get-my-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.e-learningman16jakarta.com/__statics/gudangsoal/files/how-to-hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/flip-master-free-coins_GM406889139.pdfIn PDF document text
    • https://www.e-learningman16jakarta.com/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.e-learningman16jakarta.com/__statics/gudangsoal/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://www.e-learningman16jakarta.com/__statics/gudangsoal/files/getrobux-come_GM431946152.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://e-learningman16jakarta.com/__statics/gudangsoal/files/how-to-get-free-robux-easy_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_off00003370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3370 21812 bytes
SHA-256: 867e18307b61bd4a252bd16c4ecad67e7b5ef879638586ac1bfa90442ed9fed2
font_01_sfnt_off00006397.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6397 19556 bytes
SHA-256: 9e3463d983c0af134b0e153adf2863544f1f207a35b73ea3ad09ed24e9584e64

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