Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ec2180745925920…

MALICIOUS

PDF

35.0 KB Created: 2021-07-03 13:28:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 70b9f3eea06e16d8d11a690ec757c740 SHA-1: 408f59e45ae240f12dae9f603ded1f8b95e7a69e SHA-256: 3ec2180745925920cd73d17f12d4997942eb48070b102676f74dc62e151bf342
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links designed to lure users into clicking on what appear to be game hacks or generators. These links redirect to malicious infrastructure, specifically identified as a redirector. The document body and heuristics indicate a pattern of distributing links to potentially malicious content, likely as a form of phishing or scam. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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/406889139/hack-the-game-coin-master-game-hack In PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/coin-master-card-hack_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/coin-master-free-spins-and-cards_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/how-to-buy-pubg-uc-for-free_GM1330123889.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/coin-master-ids-for-free-spins_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-hack-robux-download-ios_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-skin-on-strucid-in-roblox-how-to-get-i_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/for-free-for-robloxcom-mobile4free24com_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-robux-codes-2021-april_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/coin-master-facebook-hack_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/coin-master-hack-app-2021-download_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/i-will-hack-roblox-id_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/egg-farm-sim-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-project-pokemon-exp-hack_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/how-to-get-free-robux-no-human-verification_GM431946152.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_002_off000032c3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32C3 22812 bytes
SHA-256: 75eb35ea43262c00c707b9c4c5a69a148f350033ad7a7de6e4e793981eb11503
font_01_sfnt_off000065e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E8 18428 bytes
SHA-256: 51a0c449eaa86980a1dd870200fb645f17238fc71baeb716fc22b8a77d6de95e

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