Malicious PDF — malware analysis report

Static analysis result for SHA-256 188bb9b71793ff58…

MALICIOUS

PDF

35.0 KB Created: 2021-07-03 12:31:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 3841e2b741e3f055b1ac7f541fcdd2cd SHA-1: 1f79d77bba14ecca68d9cde7f0c44fbd546998f7 SHA-256: 188bb9b71793ff5877decd8ae527499fe8734b015da64ffc04bc9ba4a08b0e0a
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appear to be game hacks or generators. The primary link redirects to malicious infrastructure, indicating a phishing or scam attempt. The document's structure and embedded links suggest it is part of a larger campaign to drive traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/coin-master-free-spins-heaven-game-hack In PDF document text
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/coin-master-apk-hack-3527_GM406889139.pdfIn PDF document text
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/script-executor-free-download-roblox_GM431946152.pdfIn PDF document text
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021-gabe_GM431946152.pdfIn PDF document text
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/roblox-script-hack_GM431946152.pdfIn PDF document text
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/how-to-spawn-models-in-roblox-with-hack_GM431946152.pdfIn PDF document text
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-leah-ashe_GM431946152.pdfIn PDF document text
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/free-spin-link-of-coin-master_GM406889139.pdfIn PDF document text
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/how-to-get-2021202120219b-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/toolbox-for-mcpe_GM479516143.pdfIn PDF document text
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/roblox-hack-tool-no-verification_GM431946152.pdfIn PDF document text
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/coin-master-code-for-free-spins_GM406889139.pdfIn PDF document text
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/roblox-high-school-free-money_GM431946152.pdfIn PDF document text
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/how-to-get-free-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://elearningma.almatuq.sch.id/__statics/gudangsoal/files/coin-master-free-redeem-code_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
font_00_sfnt_off00003352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3352 22752 bytes
SHA-256: a8a539aa30c28b6ccd433a04230bcdb5426235f55b624c7699dacff372141796
font_01_sfnt_off00006607.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6607 18288 bytes
SHA-256: ec33f891d0c2e54048bbb9a0f23160c4329abb01e99b49d4e5745551193b5b49

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