Malicious PDF — malware analysis report

Static analysis result for SHA-256 273c09d62d237797…

MALICIOUS

PDF

45.4 KB Created: 2021-06-13 21:35:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 9ba1385e3a86750969b9235dd1c3c847 SHA-1: 6a9c47013afc072ea1cd4486b64d9a185cb286a1 SHA-256: 273c09d62d237797b161e2c5fe228cff95a419b3c6bec0ff2314f63d11bfa776
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, masquerading as 'game hacks' and 'free generators'. The primary lure directs users to 'http://netcdn.co/app/431946152/hacks-on-roblox-2021-game-hack', which likely serves as a gateway to a malicious payload. The document's structure and embedded URLs suggest a phishing or scam campaign aimed at tricking users into downloading potentially harmful software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/hacks-on-roblox-2021-game-hack In PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/free-tiktok-likes-without-verification_GM835599320.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/free-coin-master-links_GM406889139.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/how-to-get-any-gamepass-for-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/how-to-get-infinite-robux_GM431946152.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/robux-claimer_GM431946152.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/free-robux-rewards_GM431946152.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/roblox-free-hair-girl_GM431946152.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/free-tiktok-bots_GM835599320.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/oprewards-com-earn_GM431946152.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/roblox-afk-cheat-download_GM431946152.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/coinmaster-twitter_GM406889139.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • https://www.maverickengineers.com/uploaded_files/userfiles/files/free-movie-websites-tiktok_GM835599320.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c86.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C86 25040 bytes
SHA-256: 31e665dc284a4e83ae8fe1d486281f302d792d6dcfdf277bfd38b28ee1253295
font_01_sfnt_off0000840e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x840E 2844 bytes
SHA-256: a66b570a908761b39e6d9e18bcb667c353840a86c6a7db528f79d01abe6b23a1
font_02_sfnt_off00008db5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB5 18584 bytes
SHA-256: d0ab98a3432ab5401548388f3a216a1691f94fc4bca60073c3f73005c58513c5

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