Malicious PDF — malware analysis report

Static analysis result for SHA-256 36dd1effca365b99…

MALICIOUS

PDF

33.5 KB Created: 2021-06-30 10:43:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: cc9b26c2d5382546a4f5d1248167beec SHA-1: 0cc18b3d9a4075ade92a863bd90400990f649a23 SHA-256: 36dd1effca365b994e8ecad0c861cb603b2af6e3aa5417d83761f95929259ce6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator' and 'game hack' lures. The document body and embedded URLs strongly suggest a phishing or scam attempt to trick users into visiting potentially harmful sites. The ML classifier also flagged this PDF with high confidence.

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/robux-hack-v1-0-game-hack In PDF document text
    • http://library.apsidoarjo.ac.id/repository/growbux-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/do-you-want-free-robux-get-unlimited-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-free-coins-in-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/pokemon-go-free-pokecoins-hack_GM1094591345.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-e-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/gift-card-roblox-free-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-free-dominus-hack_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-posed-golden-freddy-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/easy-hack-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-noclip-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/hack-master-coin_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-spin-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-script-hacks_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/dragon-ball-z-the-final-stand-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/steal-anyones-robux-hack_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
font_00_sfnt_off00002dd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DD5 21756 bytes
SHA-256: 2464f977158ede91222c1565d2ba17083074c7ec8491901f3d883ed51ac60223
font_01_sfnt_off00005d5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D5A 19132 bytes
SHA-256: 4c9faf99392185bdfa8609035c3546da95fe12640dd791e14ef1e6107d9e842b

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