Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b2382715b23d81e…

MALICIOUS

PDF

44.9 KB Created: 2021-05-17 09:23:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c5cffbb26dfb01ce4b25a8fab6750974 SHA-1: f5f280cadb903cb98143f171daa2e1363fbe3758 SHA-256: 5b2382715b23d81edcf7d5f540aa1950206185c8fa5d5db14e95d1b1c2e6f60f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, one of which, 'https://netcdn.xyz/app/431946152/robux-giver-game-hack', is identified as a malicious redirector. The document body and heuristics suggest a lure for game-related cheats or generators, which is a common tactic for phishing or malware distribution. No scripts were extracted, but the presence of malicious links and the lure indicate a likely attempt to redirect the user to a malicious site, potentially for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9958

Heuristics 3

  • 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.
  • 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/robux-giver-game-hack In PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/what-is-robux_GM431946152.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/free-roblox-money_GM431946152.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/robux-free-co_GM431946152.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/how-to-get-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/coin-master-free-spins-link-download-today_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/coin-master-fun-hack-online_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/free-roblox-cards-pin-number_GM431946152.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/coin-master-daily-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://himalayandiscoverytrek.com/userfiles/files/free-robux-site_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a06.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A06 27304 bytes
SHA-256: 56ceb8b4c7621e38cd9824a5785c26bdf8ab9cdd95f2f94922eabafe05078abc
font_01_sfnt_off00008841.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8841 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009552.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9552 18084 bytes
SHA-256: 7a12c9f5eb0a0db1f8f257aa9a01d8091f877bc5a7f544a47565c95aa29e59f6

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