Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dc6bd015c572e8c…

MALICIOUS

PDF

34.6 KB Created: 2021-07-01 09:36:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 73a86164806274f953a11d1c384d7e22 SHA-1: 0d0e3df6e9600284ff0f5c4df65aa52044275007 SHA-256: 0dc6bd015c572e8c24b5fa4b7d602ab69318c142e171442ec0affd4af71f6814
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF is designed as a lure, using keywords like 'game hack' and 'free generator' to attract users. It contains numerous links to other PDFs hosted on a link farm, all seemingly related to scams or hacks, and also points to a malicious redirector. The ML classifier strongly indicates malicious intent, and the overall structure suggests a phishing or scam campaign.

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.co/app/431946152/hacked-roblox-face-game-hack In PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-hack-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-hack-cheat-engine-money_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-get-free-hair-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/proxo-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/hack-robar-cuentas-de-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/boku-no-roblox-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-roblox-accessories-2021_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-use-cheat-engine-undetected-on-roblox_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/rbxboost-get-free-robux-online_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-get-anything-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/como-hackear-la-cuenta-de-mellovesbunnys-en-roblox_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-strucid-hacks_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/obby-for-free-robux_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/114-4-hacks_GM479516143.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-this-game-has-shut-down-cheat-engine_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-hide-and-seek-hack_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
font_00_sfnt_off00003001.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3001 22660 bytes
SHA-256: deed18a9888c1ad0351be3d725cd26d472fc4196a36a2bba9f1dad45684ba23e
font_01_sfnt_off00006287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6287 18996 bytes
SHA-256: b553aed99efb19eec1ea885b94863e89913a4a785041be48362bc40f952a59cf

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