Malicious PDF — malware analysis report

Static analysis result for SHA-256 c80e215ef07add64…

MALICIOUS

PDF

34.6 KB Created: 2021-06-28 22:35:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d7845fdeff83d8f301c8f8118c3f2cf8 SHA-1: 73f23d7b5f9f351958e1c2182f20e8f3b6b34918 SHA-256: c80e215ef07add6468c14d5b5e6d58154c0f569a8308813deca0035599d52b80
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to a malicious URL. The document body also contains this URL and phrases suggesting a download or hack tool. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent. The embedded URL is the primary indicator of compromise.

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/free-robux-inspect-tool-needed-game-hack In PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/robux-earning-sites_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-admin-on-roblox-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/mobile-for-free-24-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/school-campus-free-roblox-uncopylocked_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-pocket-edition-free-apk_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-is-hacked-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-download-roblox-strucid-hacks-for-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-sprinting-simulator-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hack-para-counter-blox-roblox-offensive-download_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hacks-and-cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-admin-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-instantlyeasy_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-codes-for-roblox-mm2_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hacks-for-framed-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-legit_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/install-roblox-free-robux_GM431946152.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_off00002fef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FEF 22336 bytes
SHA-256: 5ca8c086cf569e2f49d28e7fc2d1786a1423490067290e2c387a1be716638099
font_01_sfnt_off00006160.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6160 19244 bytes
SHA-256: eaf24d19038158f7ccaddcdd2372f5bf1c9d8f59ce7165f35ba6dc044ac2d0da

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