Malicious PDF — malware analysis report

Static analysis result for SHA-256 198d4465e7047463…

MALICIOUS

PDF

33.8 KB Created: 2021-07-05 01:58:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 55c082e58b3af2d4528dc881a0a5ca6d SHA-1: 88bdbd0083926faba94e3ef38f7322867608664b SHA-256: 198d4465e7047463c2c216d71e690b449387d1803433c1a4b817b63ba88ecca5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/coin-master-hack-version-download-game-hack PDF link annotation
    • http://digilib-unirow.ac.id/repository/pack-free-maps-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/pubg-uc-hack-software_GM1330123889.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/dungeon-quest-hack-script-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/free-robux-no-scam-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/rbxdemon_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/free-roblox-giftcardd_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/roblox-ninja-legends-hack-download_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/is-pokemon-go-free_GM1094591345.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • http://digilib-unirow.ac.id/repository/how-to-get-free-robux-easy-no-download_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
stream_002_off00002d5f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2D5F 22508 bytes
SHA-256: 5559803afa1aff437d67e606e718840304126d5800a3f2ee8067b012e07f77d7
font_01_sfnt_off00005fb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB4 18720 bytes
SHA-256: 210f7e42d7e26a7b50374b7f571f544979918233c48f1eb5c911e85e040a31e1

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