Malicious PDF — malware analysis report

Static analysis result for SHA-256 fce65cb2ae33bd75…

MALICIOUS

PDF

35.8 KB Created: 2021-06-30 06:00:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: cbdc4d0b799e313c92eb606105177e86 SHA-1: 5aee07368cc293dab6142284b906606baff9c3d3 SHA-256: fce65cb2ae33bd75daae526594ae3d00d39baacb730f663ad93f8a010c243e8b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links disguised as 'free Robux' and 'game hacks' to lure users. The primary link, http://netcdn.co/app/431946152/free-robux-codes-2021-october-game-hack, is flagged as a malicious redirector. While no scripts were explicitly extracted, the document's structure and embedded URLs strongly suggest a phishing or malware distribution attempt, likely initiated via spearphishing.

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.co/app/431946152/free-robux-codes-2021-october-game-hack In PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/roblox-lumber-tycoon-2-money-hack-2021_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/roblox-rs-hack-2021_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/roblox-bee-game-hack-to-play_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/roblox-free-robux-net_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/0-0-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/comment-hacker-roblox-avec-une-application_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/hack-dragon-ball-final-stand-roblox_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/free-robux-no-survey-no-human-verification-no-download_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/startingsploit-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/roblox-glitch-site-free-robux_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/free-pokemon-brick-bronze-beta-camino-4-roblox_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/how-do-u-undo-someone-hacking-ur-roblox-acc_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/roblox-jailbreak-free-cash_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/hack-de-dragon-ball-rage-roblox-2021_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/roblox-robux-cheat-pc_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/are-there-any-obbies-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/how-to-buy-robux-for-free_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
font_00_sfnt_off000032a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A1 22796 bytes
SHA-256: 03dc456ef9b3bfc93c1a7eb78463bdbc95795bbaea4e0e377a4b6b05253b2e6b
font_01_sfnt_off000065e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E0 19396 bytes
SHA-256: 6998c5103bde1a1467075e69cefa3f4d2cf5d70c1044f2737731bf6f50fc54bc

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