Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7ab7d57277c26e4…

MALICIOUS

PDF

44.6 KB Created: 2021-06-03 06:25:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 65428025ee7e37bf04a181a67f5393c1 SHA-1: e25995615063f8d2f050d6c5c071e15ef9f3e4ba SHA-256: a7ab7d57277c26e4507e1b8732be35d46490c2569a20d992d34ffe8845a3d2d2
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to lure users to websites offering game hacks and generators, such as 'roblox-hacking-website-game-hack'. The presence of a visual download button and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. The document's structure and embedded links suggest it is part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/431946152/roblox-hacking-website-game-hack In PDF document text
    • http://lib-smansumsel.sch.id/repository/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-hack-ios-apk_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-to-get-free-spins-on-coin-master-android_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-hack-online-download_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/make-your-own-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/robux-free-co_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/2021-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/hack-coin-master-using-pc_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/minecraft-hack-ios_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/roblox-microsoft-rewards_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/download-coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/haktuts-free-spins_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
stream_004_off00004f85.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F85 25104 bytes
SHA-256: 13fa44f9af8744cb567e7878d7e80df1dd1f37fb0f9a3493694fdc0e141a6808
font_01_sfnt_off000089af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89AF 18892 bytes
SHA-256: e7d47ce6402ad6c34a9dd837b4455ddf5104770abd157e72eb2d384f2e13ef46

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