Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c860b868788a5ed…

MALICIOUS

PDF

33.9 KB Created: 2021-07-06 03:09:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 23336f5969b61affc3c4287d795c25a6 SHA-1: 92254c80a5b216c42993d3cff602de8ca7f96f22 SHA-256: 9c860b868788a5ed45be5368374da47b51dd8535ca114ce661c64bab1c8c05df
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game currency and hacks to trick users into clicking malicious links. The embedded URLs, such as http://netcdn.tw/app/431946152/how-do-you-get-robux-on-roblox-game-hack, are identified as malicious redirectors. The document's content and structure strongly suggest a phishing or scam attempt, likely leading to further malware downloads or credential harvesting.

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/431946152/how-do-you-get-robux-on-roblox-game-hack In PDF document text
    • http://perpus.polimarim.online/repository/roblox-money-hacks-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/robloxhacks_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-free-robux-no-real-money-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-hack-roblox-pet-traininer_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-51-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/tiktok-free-music_GM835599320.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-free-robux-hack-penguin_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-money-in-roblox-bloxburg_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-e-free_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/mathep_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/robux-page_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-2021-codes_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/pokemon-go-free-upgrade_GM1094591345.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002db8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DB8 22056 bytes
SHA-256: 7ebbd533feafd19dff03ea76d7c73d71ff54d017d66ec99e15f43938c92f70cf
font_01_sfnt_off00005e97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E97 19224 bytes
SHA-256: 95775dbe9d5c5d02c2087d1f26a1dbf84b585577f9403205c74baa1bbd57bf4f

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