Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e35c41c1a2de9b8…

MALICIOUS

PDF

34.7 KB Created: 2021-06-29 23:50:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: cc152b795dc8910c3e11882a60ddad06 SHA-1: 2c1aaca54679ff2a35df95e597b907fa0f33e41f SHA-256: 1e35c41c1a2de9b8c7413e149d7c8a6b3eeac1e8b4e70ed1fe58c58cfbc1425a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure related to game hacks and includes a critical heuristic firing for a malicious redirector link. The document body also contains the same malicious URL, reinforcing the phishing attempt. The ML classifier also flagged this PDF with high confidence.

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/how-to-hack-roblox-accounts-2021-august-game-hack In PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/hack-para-phantom-forces-roblox-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-cheats-switch_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-coins-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-jump-high-in-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-make-a-roblox-hack-gui_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-jailbreak-edid-hack_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/promo-code-free-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-can-you-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/master-coins-free_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-hair-roblox-not-model_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-connect-to-xo-s-hack-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-roblox-card-id_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-roblox-gfx-artists_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-how-to-get-free-robux-with-cheat-engine_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_off00003049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3049 22020 bytes
SHA-256: 75c876b35f2517a6f0f0637ab39428dbed7315e0a2c150619e6514c8a37878a9
font_01_sfnt_off000060ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60EC 19468 bytes
SHA-256: c1bed3f0cc7725db3a2ba84cebf0f7e14540f3e686dd277f35b97debbae8bd5c

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