Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf4203090fc03218…

MALICIOUS

PDF

33.7 KB Created: 2021-06-27 22:45:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b4d54418afb18c420a07a9b24b0c96cf SHA-1: ca2212138e2c3068e39cb8ca163e9553026ac923 SHA-256: cf4203090fc0321852a1bb64a2db64d03f92c2df6d35669733ff36d88053b056
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains multiple links to known malicious redirectors and lures users with the promise of game hacks and free in-game currency. The document body and embedded URLs strongly suggest a social engineering tactic to trick users into downloading potentially unwanted or malicious software. No scripts were extracted, but the presence of malicious links and the lure indicate a high likelihood of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/ping-booster-free-download-for-roblox-game-hack In PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-robuxs-app_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/raindrop-free-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-robux-hack-2021-computer_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/roblox-build-a-boat-hack-script_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/how-to-get-free-roblox-account_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/cheat-to-add-money-to-roblox-lumber_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/robux-generator-free-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/how-to-get-robux-items-for-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/hacks-para-roblox-dragon-ball-rage_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/has-roblox-ever-done-free-robux-events_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/roblox-qweerial-cheat_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-codes-in-roblox-arsenal_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/hiw-ti-hack-a-roblox-account_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/hack-jailbreak-roblox-2021-kranberrye_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/roblox-hacks-for-western-frontier-darkrp_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/how-to-hack-roblox-boxing-simulator-2_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/free-roblox-girl-clothes-codes_GM431946152.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://digilibfisip.uwks.ac.id/repository/roblox-servers-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off00002b45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B45 22536 bytes
SHA-256: b808b68a551baf0c5da2ad1e2199931105fe1ea8136afe5b796770474c763fdb
font_01_sfnt_off00005d7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D7F 19536 bytes
SHA-256: d272935285f5d0103c5e2150455f2d1c9c3d2c4d9f4ce1f6a33194bda527c38f

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