Malicious PDF — malware analysis report

Static analysis result for SHA-256 883abad4eca4c094…

MALICIOUS

PDF

34.1 KB Created: 2021-07-06 08:01:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 40c35aca55bed12d83a415a5bc2f46d5 SHA-1: 462e26a225f2c791ae41a7ef42c5a9409194b145 SHA-256: 883abad4eca4c09484524ed12f452918bd8f24df1d14cc20a277ce45f73b778d
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains numerous links designed to lure users into clicking on what appear to be game hacks or generators. The primary link redirects to malicious infrastructure, and many other links point to PDFs hosted on a compromised website, likely part of a link farm for SEO poisoning. The document's content and structure strongly suggest a phishing or scam attempt, leveraging fake offers to drive traffic to malicious sites.

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.tw/app/431946152/how-to-make-free-robux-game-hack In PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-robux-no-human-verification-trackid-sp006_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/minecraft-pocket-edition-mods-for-free_GM479516143.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/codes-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/roblox-www-com_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/como-instalar-hackear-para-roblox-robux-2021_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/coin-master-admin-free-spins_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/the-best-roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/is-hacking-banned-in-roblox_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/minecraft-free-download-android-apk-014-0_GM479516143.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/hack-coin-master-using-cheat-engine_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/roblox-skins-boy-free_GM431946152.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E60 22256 bytes
SHA-256: 3fb02d987013b8de349c8054a8788f9725eda4c8952b80edebf2cf30f4863e0b
font_01_sfnt_off00005fd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD6 19244 bytes
SHA-256: 6b22af1083df9260d35a8428a36ac91eb4c7dbc1159f4e02fe88489ba0efcc00

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