Malicious PDF — malware analysis report

Static analysis result for SHA-256 f43951ea4a431064…

MALICIOUS

PDF

34.7 KB Created: 2021-06-27 06:14:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 1e0b6dc00d9d0343b62e5e1ab6e32f8c SHA-1: 25d5b4318db7ab128f06eae11453a5620d611abe SHA-256: f43951ea4a431064c683317bcd98ac59131b60c05c91d680dff57d10e2c93522
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including a known malicious redirector, under the guise of providing game hacks and generators. The document body and heuristics indicate a lure for free in-game items, likely leading to further malicious content or potentially unwanted applications. No scripts were extracted, but the extensive link farm and redirector usage are strong indicators of a malicious workflow.

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/how-to-inject-hacks-into-roblox-game-hack In PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/coin-master-free-pet-food-links_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/roblox-hack-attack-wiki_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/robux-hack-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-spins-and-coins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-card-codes-robux_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/roblox-but_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-daily-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-minecraft-skins-java_GM479516143.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/how-to-get-free-robux-by-pressing-one-button_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/minecraft-pe-016-0-apk-download-free_GM479516143.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/coin-master-100-spin-slot_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/how-to-buy-pubg-uc-for-free_GM1330123889.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/feb-23-2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-roblox-accounts-with-premium_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-minecraft-maps-pe_GM479516143.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_off000030aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30AA 22284 bytes
SHA-256: 9dbe6be8fed6d8dfb6fa65be8df85fff0a3254a180858d20c2a5f289fbb27b30
font_01_sfnt_off000061f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61F7 19112 bytes
SHA-256: e2dc044ef04811371cf5f961b23469be4513fc771b1bd21be3903f711ec7814f

Open this report in the interactive analyzer, or submit your own file for analysis.