Malicious PDF — malware analysis report

Static analysis result for SHA-256 049fda35cca5768a…

MALICIOUS

PDF

47.0 KB Created: 2021-05-12 02:19:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: ccddc538969e6da127da20497ef7d06c SHA-1: 0bf68631d58e21301fb62e78b3fc656fdcf1a7aa SHA-256: 049fda35cca5768a762205555485bd9b7764c94144dab600d08387d443d9a4bb
260 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains numerous links to external resources, including a primary malicious redirector at `https://netcdn.xyz/app/431946152/how-to-get-unlimited-robux-game-hack`. The document body and heuristics indicate a lure for game hacks or free currency, designed to trick users into fake CAPTCHA or human verification prompts. The presence of multiple PDF links suggests a link farm intended to distribute malicious content or lead users to further phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 6

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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-to-get-unlimited-robux-game-hack In PDF document text
    • http://perpus.stikesphi.ac.id/repository/free-flip-master-coins_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/free-spin-coin-master-app-download_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-hacks-no-surveys_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/hackear-coin-master-sin-root_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/reddit-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/do-coin-master-hacks-work_GM406889139.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_off000047e6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47E6 24964 bytes
SHA-256: 4a156638dc12fa5a91ad41d677178c44c7bc52ea477ac59663e19d2465cc2f17
font_01_sfnt_off000081b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81B0 7272 bytes
SHA-256: f462303657ce1de10d3e7d5ae1fe17c8584116bd5bc216971166de87266da924
font_02_sfnt_off00009321.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9321 18932 bytes
SHA-256: ace2ca1e28dcf07f10f5e78488076fd29e63d022ebadbc7c3b340b65ab1424e7

Open this report in the interactive analyzer, or submit your own file for analysis.