Malicious PDF — malware analysis report

Static analysis result for SHA-256 3914f71b5322914a…

MALICIOUS

PDF

43.8 KB Created: 2021-06-03 11:17:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 8c9cc52a2abe9b5da61e78e3f299fb2b SHA-1: 0ad35f39cae02dacfffbc5e2fbf9252c460c962a SHA-256: 3914f71b5322914a466573000bbfd8a401675f96b24dcd6bb891fd2b39f3b7cf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to a 'coin master hack' lure, indicating a social engineering attempt to trick users into downloading potentially malicious files. The embedded URLs and the document's content strongly suggest a phishing or scam campaign. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/406889139/coin-master-hack-no-survey-or-verification-game-hack In PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-hack-without-verification-ios_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/pokemon-go-for-free_GM1094591345.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/easy-points-gg_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/tiktok-free-book-hack_GM835599320.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-roblox-card_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/www-coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/get-robux-now_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/download-hacked-games-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/how-to-log-out-of-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/pop-slots-free-vegas-casino-slot-machine-game-coin-master_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
stream_004_off000051bb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51BB 24088 bytes
SHA-256: 7556e85692c3cbe02e98b0306d56a09ced45de97615416a4f120f00b23796807
font_01_sfnt_off0000889e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x889E 18284 bytes
SHA-256: 11bfbc115034705528bf6e10e44e61aa29d499e253164c4385166f501b43b311

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