Malicious PDF — malware analysis report

Static analysis result for SHA-256 223e3cc486933517…

MALICIOUS

PDF

45.2 KB Created: 2021-05-15 09:08:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 69949143e35096052b31c4cfbdcacd21 SHA-1: 77cf9cc3152d4caef3c62d287f977cbb3f36c618 SHA-256: 223e3cc486933517d5b4393b46043dd24d8e6b6a8e9359293dfb9f263f9dc850
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to known malicious infrastructure, specifically advertising 'free Robux' and game hacks. The document body and embedded links strongly suggest a social engineering lure designed to trick users into visiting a malicious site. No scripts were extracted, but the presence of malicious redirectors and the lure indicate a high likelihood of a phishing or scam attempt.

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 https://netcdn.xyz/app/431946152/free-robux-by-watching-ads-game-hack In PDF document text
    • https://elearning.mtssadat.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtssadat.sch.id/__statics/gudangsoal/files/roblox-free-executor_GM431946152.pdfIn PDF document text
    • https://elearning.mtssadat.sch.id/__statics/gudangsoal/files/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtssadat.sch.id/__statics/gudangsoal/files/how-do-i-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtssadat.sch.id/__statics/gudangsoal/files/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • https://elearning.mtssadat.sch.id/__statics/gudangsoal/files/coin-master-daily-gift-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://elearning.mtssadat.sch.id/__statics/gudangsoal/files/coin-master-free-spins-iphone-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtssadat.sch.id/__statics/gudangsoal/files/freespinandcoin-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtssadat.sch.id/__statics/gudangsoal/files/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • https://elearning.mtssadat.sch.id/__statics/gudangsoal/files/coin-master-fan-page-facebook_GM406889139.pdfIn PDF document text
    • https://elearning.mtssadat.sch.id/__statics/gudangsoal/files/robux-online_GM431946152.pdfIn PDF document text
    • https://elearning.mtssadat.sch.id/__statics/gudangsoal/files/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtssadat.sch.id/__statics/gudangsoal/files/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtssadat.sch.id/__statics/gudangsoal/files/coin-master-free-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • https://elearning.mtssadat.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtssadat.sch.id/__statics/gudangsoal/files/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtssadat.sch.id/__statics/gudangsoal/files/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtssadat.sch.id/__statics/gudangsoal/files/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • https://elearning.mtssadat.sch.id/__statics/gudangsoal/files/free-roblox-scripts_GM431946152.pdfIn PDF document text
    • https://elearning.mtssadat.sch.id/__statics/gudangsoal/files/get-roebucks-com_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
stream_003_off00004bef.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BEF 27224 bytes
SHA-256: 992fd70b4de3299b114e5857e7876307bb1b32a569696ade285108f4d7485925
font_01_sfnt_off00008acb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ACB 19472 bytes
SHA-256: 06b7c2c04a08988b26013261e09f65c94c24f523f4ae9df4e6f4943f7c42b6f1

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