Malicious PDF — malware analysis report

Static analysis result for SHA-256 456d44938b5c3855…

MALICIOUS

PDF

42.0 KB Created: 2021-05-15 03:32:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 5c1cb54b6c17d12a67627962e5277746 SHA-1: 4494625484bc41fefca6af424396ba4b71ff7dc3 SHA-256: 456d44938b5c38556864bc640c318960edbcf1609941791453cd2b25325b35b4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as game hacks and generators. The primary lure URL, 'https://netcdn.xyz/app/479516143/how-to-download-minecraft-for-free-on-pc-game-hack', is associated with a high volume of malicious redirects. The document body, though partially corrupted, contains references to game hacks and the malicious URL, reinforcing the lure. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/479516143/how-to-download-minecraft-for-free-on-pc-game-hack In PDF document text
    • http://ipdrs.org/images/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/coin-master-hack-without-verification-ios_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/roblox-18_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/www-free-robux_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://ipdrs.org/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/master-free-spin_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/master-hack-coin_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/how-to-get-free-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • http://ipdrs.org/images/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • http://ipdrs.org/images/how-to-get-more-spins-on-coin-master-hack_GM406889139.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_off000048c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48C3 24700 bytes
SHA-256: c5429fbafb5e217da9ec37326d0c7d6c252be0f31b12daf7ec6cba236d8239c1
font_01_sfnt_off00008148.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8148 18444 bytes
SHA-256: 9e3148d8479467241e454dad7f95496d0753043299a483a1afd63e9d4426fe5d