Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d7a967b2e1bf804…

MALICIOUS

PDF

45.3 KB Created: 2021-06-04 05:21:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 74dbc54a5c3df73eb32bc0d3db8edd2e SHA-1: cdb95780ee7e8713c90cb3550d51b0397b699f01 SHA-256: 5d7a967b2e1bf8045ebfb02b2e51cb1d55aae7232cf56d7d9219afc3eadb0317
102 Risk Score

Malware Insights

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

The PDF contains multiple links disguised as game hacks and generators, aiming to lure users into downloading further malicious content. The ML classifier strongly indicates maliciousness, and the presence of external URIs and a direct IP address link reinforces this assessment. No scripts were extracted from this sample, but the document's structure and embedded links are designed to exploit user interest in free game items.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.online/app/479516143/free-op-minecraft-servers-game-hack PDF link annotation
    • http://183.91.70.7/repository/roblox-got-talent-piano-hack_GM431946152.pdfPDF link annotation
    • http://183.91.70.7//repository/how-to-earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://183.91.70.7//repository/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://183.91.70.7/repository/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://183.91.70.7//repository/ways-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://183.91.70.7//repository/coin-master-free-spins-heaven_GM406889139.pdfIn PDF document text
    • http://183.91.70.7//repository/roblox-sign-in-free_GM431946152.pdfIn PDF document text
    • http://183.91.70.7/repository/unlimited-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://183.91.70.7/repository/how-to-play-coin-master_GM406889139.pdfIn PDF document text
    • http://183.91.70.7/repository/mangocheats-com-hack-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://183.91.70.7//repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://183.91.70.7/repository/coin-master-download-hack_GM406889139.pdfIn PDF document text
    • http://183.91.70.7/repository/how-to-get-100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://183.91.70.7/repository/with-pokemon-go-free-download_GM1094591345.pdfIn PDF document text
    • http://183.91.70.7//repository/robux-2021_GM431946152.pdfIn PDF document text
    • http://183.91.70.7/repository/pubg-uc-nedir_GM1330123889.pdfIn PDF document text
    • http://183.91.70.7/repository/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://183.91.70.7/repository/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • http://183.91.70.7//repository/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://183.91.70.7/repository/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000054c9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x54C9 26592 bytes
SHA-256: b11778a38fbc821163cbb06bee83f4bb0b9014ad8a6b49751931c3b22f376f4e
font_01_sfnt_off00008fec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FEC 17856 bytes
SHA-256: a77b7ff2a68dfc8683e01ffa7febdd478081a7961822aa2eebc6e1611696765c

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