Malicious PDF — malware analysis report

Static analysis result for SHA-256 f49cc2ae71ff60ed…

MALICIOUS

PDF

41.8 KB Created: 2021-05-12 14:36:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 10889a92c4ae80b5799cf5e7b6fc9727 SHA-1: 6acd5c6c29240b06fb835db898a15f1255d8690c SHA-256: f49cc2ae71ff60ed7b12e1404f0ade15ff9f82808fbd279ee31fbe790d68ae5a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a malicious URL, masquerading as a "Robux Generator" or "Game Hack". The ML classifier strongly indicated maliciousness, and multiple heuristics confirm the presence of malicious redirector links. The document body and embedded links suggest a social engineering lure to trick users into visiting potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/robux-generator-no-survey-game-hack In PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/download-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/coin-master-on-facebook_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/coin-master-heaven-free-spins-link_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/www-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/master-coins-free_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/roblox-verification_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/mistplay-robux_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/coin-master-free-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/lots-of-robux_GM431946152.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
stream_003_off000047f9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47F9 24692 bytes
SHA-256: c700bf6d64b7c221bc87181d5b3ff7228f6a173f1f084085a09e1a3aaadc2810
font_01_sfnt_off00008034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8034 18476 bytes
SHA-256: 8d7caae1347775e8ca08dc472fe9114d87f2701527a8ea14c41e6a126f1cfe3e

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