Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eb4734e359d10fb…

MALICIOUS

PDF

35.4 KB Created: 2021-07-01 17:59:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 137c1ce2534e709e11503b3995de9225 SHA-1: f87b9a970d0c19f36a8726f027246863a193a82c SHA-256: 9eb4734e359d10fb1ee7fda1d5dc9cf6fc9b3b519d781b8db1462fe9a6fa2e08
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free generators, directing users to a malicious redirector URL. The document body and embedded URLs suggest a phishing attempt to trick users into visiting potentially malicious sites. No scripts were extracted from this sample, but the presence of malicious redirector links and the overall theme indicate a phishing or scam campaign.

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-get-free-cars-in-vehicle-simulator-roblox-game-hack In PDF document text
    • https://3qblocks.com.tw/image/data/files/how-dop-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/roblox-its-free_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-daily-rewards-link_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/money-cheats-for-roblox-rocitizens_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/cheat-codes-for-tower-battle-simulater-in-roblox_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/how-to-get-free-antlers-on-roblox_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/how-to-get-free-robux-inspect-no-waiting_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-game-packs-for-coin-master_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/grabpoints-robux_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/wurst-112_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-spin-and-coin-blogspot-com_GM406889139.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_off00003146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3146 22600 bytes
SHA-256: 497991041e41771c5dee3d02a1403b2620f119030f753ff40d1e864e4825886e
font_01_sfnt_off000063bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BC 19736 bytes
SHA-256: 4324dfd2ba865485823fe2dd0e92b863108fbc10d60a820b3677f2c0cff9edb7

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