Malicious PDF — malware analysis report

Static analysis result for SHA-256 d43f298465fd59bc…

MALICIOUS

PDF

37.0 KB Created: 2021-06-26 18:19:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 4ca9de292699826327e1a1b270e9c1f1 SHA-1: 6cf1a53a0e923551891d4526c9d730538ada43a7 SHA-256: d43f298465fd59bc7a081a3e8adb6ed5141052f0dbc697411a74dec41e8c1318
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document employs a lure of free game currency and hacks to entice users to click on a malicious redirector URL. The primary URL identified, http://netcdn.co/app/431946152/free-robux-codes-no-verification-or-survey-game-hack, is flagged as a known malicious redirector. While no scripts were extracted, the document's structure and embedded URLs strongly suggest a phishing or malware distribution attempt, likely initiated via a spearphishing attachment.

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/free-robux-codes-no-verification-or-survey-game-hack In PDF document text
    • https://pustaka.widyakartika.ac.id/repository/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-hair-roblox-blue_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-spin-appscoin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/dss-roblox-money-hacks_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/buy-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-bubble-gum-unlimited-candy-hack_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-executors-for-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/cheat-roblox-jailbreak-franais_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-hack-quora_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-hack-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/scary-larry-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-do-you-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/haktutsin-2021-09-coinmaster50freespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-daily-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/pokemon-go-free-pokecoins-no-human-verification_GM1094591345.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-skin-in-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/is-minecraft-free_GM479516143.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_off00003781.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3781 22656 bytes
SHA-256: 01b1d0f7858f0c19efd9c1e8b70733739ff7315909275994ad816494ce368aae
font_01_sfnt_off00006a46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A46 19544 bytes
SHA-256: ffb7e8400f2bb4c075c5ba562620892271ebe817d78b7a1623f2153c820398da

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