Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5d898f5cec7684e…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 15:45:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 2a36de9579488da941c2916be6708841 SHA-1: a9f54b62a04a1c1d70a0e8d2dad0bc380256dca5 SHA-256: a5d898f5cec7684e4ec1b51696087b99a561c999f1f5b92bdd428f6c3aecce5f
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to lure users into downloading potentially malicious files or visiting scam websites, masquerading as free game generators or hacks. The document body and heuristics indicate a strong redirection to known malicious infrastructure and a link farm, suggesting an attempt to drive traffic to exploit or scam sites. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.tw/app/479516143/minecraft-apk-free-download-016-0-game-hack In PDF document text
    • http://www.travelone.ae/userfiles/files/get-fre-robux-just-by-join-this-group_GM431946152.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/free-tiktok-likes-trial_GM835599320.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/good-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/apocalypse-rising-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/free-roblox-gift-card-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/roblox-breaking-point-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/coin-master-card-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/como-hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/coin-master-rewards-2021_GM406889139.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
font_00_sfnt_off00002eed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EED 22440 bytes
SHA-256: 0729598737a06bec91d81e43f08d431319b0ce29e762b5cd8c6d71a25c49bf6e
font_01_sfnt_off0000609e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x609E 19372 bytes
SHA-256: 199fc5fb5555a01dd07f1f7af865c4c0146787c368d5cdea82e8d68cb589e1c5

Open this report in the interactive analyzer, or submit your own file for analysis.