Malicious PDF — malware analysis report

Static analysis result for SHA-256 297dac97cc5ac145…

MALICIOUS

PDF

50.3 KB Created: 2021-06-11 04:05:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 67b795fce8faea6ac38d11a18d7dbab9 SHA-1: 8c23f72feb19b7f915e05406369cff649ba07fea SHA-256: 297dac97cc5ac145f5bfde6ff6c1b59ee1d54e6580be3a6b56d701c9a504bc1c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a primary link identified as a malicious redirector. The document body and heuristics suggest a lure related to game hacks and free currency generators, aiming to entice users to click the malicious link. No scripts were extracted, but the presence of embedded URLs and the nature of the lure strongly indicate a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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 https://netcdn.tw/app/431946152/do-those-robux-hacks-work-game-hack In PDF document text
    • https://eleganceautospa.ca/images/hack-rrobux-infinitos-en-roblox-pastebin_GM431946152.pdfIn PDF document text
    • https://eleganceautospa.ca/images/roblox-money-cheat-2021_GM431946152.pdfIn PDF document text
    • https://eleganceautospa.ca/images/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://eleganceautospa.ca/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://eleganceautospa.ca/images/robux-hack-no-fake_GM431946152.pdfIn PDF document text
    • https://eleganceautospa.ca/images/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://eleganceautospa.ca/images/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://eleganceautospa.ca/images/coin-master-free-spin-trick_GM406889139.pdfIn PDF document text
    • https://eleganceautospa.ca/images/coin-master-gold-cards-free-2021_GM406889139.pdfIn PDF document text
    • https://eleganceautospa.ca/images/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://eleganceautospa.ca/images/free-ways-to-get-robux-2021_GM431946152.pdfIn PDF document text
    • https://eleganceautospa.ca/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://eleganceautospa.ca/images/wurst-minecraft_GM479516143.pdfIn PDF document text
    • https://eleganceautospa.ca/images/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • https://eleganceautospa.ca/images/hack-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://eleganceautospa.ca/images/free-robux-download_GM431946152.pdfIn PDF document text
    • https://eleganceautospa.ca/images/v3rmillion-hacks-roblox-heroes-online_GM431946152.pdfIn PDF document text
    • https://eleganceautospa.ca/images/how-to-get-free-hats-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://eleganceautospa.ca/images/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • https://eleganceautospa.ca/images/coin-master-free-spins-cheat-codes_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005142.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5142 29896 bytes
SHA-256: 240fff06734606ee2ee6b65fd88fef9cf6541471918e30cd699ddb3503cff2d9
font_01_sfnt_off000096ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96EF 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off0000a09e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA09E 18780 bytes
SHA-256: 282f2e311f2642f9e407445e46b418abe0e2ae9b18619795492deb8a7af3361d

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