Malicious PDF — malware analysis report

Static analysis result for SHA-256 6729ba3f339117b7…

MALICIOUS

PDF

44.7 KB Created: 2021-05-16 14:32:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 68001cedd16026bd76ff77cdd1324b00 SHA-1: 481baff428e55af96b38f001027493f99db35994 SHA-256: 6729ba3f339117b78c97f6c3eeaeb5c54844405200060c007e28db0af1872c81
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users to websites offering game hacks and currency generators. One primary URL, https://netcdn.xyz/app/431946152/how-do-you-get-free-roblox-money-game-hack, is identified as a malicious redirector. The document body and embedded links suggest a phishing or scam attempt, likely to monetize user engagement through ad clicks or further malicious redirects.

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 https://netcdn.xyz/app/431946152/how-do-you-get-free-roblox-money-game-hack In PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/make-your-own-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/how-to-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-chips_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/coin-master-hack-without-verification-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/free-minecraft-java-edition-codes_GM479516143.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn6kediri.sch.id/__statics/gudangsoal/files/coin-blogspot_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
stream_003_off00004cc5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CC5 26272 bytes
SHA-256: d54d3a9c5d1c0fb1e9284d7818b6604bb885e52e23f3fd34cb20bdf1072cf04e
font_01_sfnt_off00008a50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A50 19064 bytes
SHA-256: 94f9efcc29addd786a26302115b4c31227e6eded102cc07b8eb042232f1d4f5b

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