Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0129d2c4be9af27…

MALICIOUS

PDF

36.0 KB Created: 2021-06-26 03:43:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2feb1b5c3d74de9e1576e43cd6488911 SHA-1: 6d2823c24d8606a91e8d025f43b103a2019f0e0f SHA-256: d0129d2c4be9af27c1bb9910147351a34c90cf37cb257fbff25f163070afba13
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free passes, directing users to malicious redirector infrastructure. The document body contains multiple URLs that are likely part of a phishing or malware distribution campaign. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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/script-hack-2021-roblox-bubble-gum-simulator-free-passes-game-hack In PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/www-cheatsk-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-hack-without-verify_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/how-to-give-robux-to-friends-for-free_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-viking-quest-hack_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/trolling-with-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/pokemon-go-free-walk_GM1094591345.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/how-to-look-like-a-pro-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-how-to-hack-games-2021_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/ex7-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/offers-to-complete-and-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-spins-for-free_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/where-is-the-hacking-station-clone-tycoon-2-roblox_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/how-to-hack-coin-master-with-game-guardian_GM406889139.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_off0000337a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x337A 22060 bytes
SHA-256: a458c671f77223a37d72eafdc497ed9e212d9aa161618b96c5d6da004077252c
font_01_sfnt_off0000646e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x646E 20176 bytes
SHA-256: 0cda6382fa51b1afd8fbb800b3da511805bc46179d9016e30326eccbfa665bfc

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