Malicious PDF — malware analysis report

Static analysis result for SHA-256 157d47cd2ce4f84e…

MALICIOUS

PDF

36.0 KB Created: 2021-07-03 11:30:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: f952c648d34d16e426fa5eed4b949624 SHA-1: 99aaa14271faf2fccf338c7e8f2fbffe32e73cc4 SHA-256: 157d47cd2ce4f84eed7a1b80e31b2909670fb977247ec312cd6f9569d9668f82
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to a known malicious domain, masquerading as a generator for game hacks and currency. The document body and embedded URLs strongly suggest a lure for users seeking free in-game items, leading them to potentially malicious sites. The ML classifier also flagged this PDF with high confidence.

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/coin-master-mod-apk-hack-game-hack In PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/free-minecraft-client_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/make-your-own-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/how-to-o-get-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/coin-master-heaven-free-spins-link_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/pubg-uc-carding-website_GM1330123889.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/coin-master-attack-madness-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/get-robux-now_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/fnaf-rolelay-roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/coin-master-mod-apk-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/what-pubg-uc-code_GM1330123889.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/aimbow-hack-fr-roblox-strucid_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/hack-para-coin-master-singapore_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/hack-the-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/how-to-download-minecraft-for-free-on-pc_GM479516143.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_002_off0000353c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x353C 23412 bytes
SHA-256: d9c10aaa24408d0879b61d3b68b171e16df073a180c3644368eebd2f937f2ff1
font_01_sfnt_off000069e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69E6 18352 bytes
SHA-256: 6f7a3771de7e76f6a30eccfe6de97210a9aaee265036d39eb3e49971bc7f02bb

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