Malicious PDF — malware analysis report

Static analysis result for SHA-256 9053eeafc355489e…

MALICIOUS

PDF

40.7 KB Created: 2021-05-14 11:34:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: ad41ae33d5f6d0c8f8e72cf77ffd1be8 SHA-1: b2201be70a1e6555faf6a89941bd51576668d51a SHA-256: 9053eeafc355489e33650bfe35e31e4868ec2eafc8f4245e529e79ff140c22bd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to known malicious redirector infrastructure, disguised as "free exploits" or "game hacks". The document body and heuristics indicate a lure for users interested in online games, aiming to redirect them to potentially harmful sites. No scripts were extracted, but the primary attack vector appears to be social engineering via deceptive links.

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/free-exploits-for-roblox-game-hack In PDF document text
    • https://dirigentigiustizia.it/images/100-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-fan-page-giveaway_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-400-spins-coins-master_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/hack-coin-master-app_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/rewards-roblox-com_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-hack-apk-app_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/roblox-hack_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/how-to-get-free-food-for-foxy-in-coin-master_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/how-to-get-free-robux-2021_GM431946152.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_003_off000045d3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45D3 24076 bytes
SHA-256: b02f477004e397f4260227b95fcf515e2be902fdadb785c77207b8f9536fcda3
font_01_sfnt_off00007c39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C39 18348 bytes
SHA-256: 3eb1125b3232d06dc8927376afe50af41f8c0a9e23720a9da0c3984e77695e12

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