Malicious PDF — malware analysis report

Static analysis result for SHA-256 dca22f1eb31fb0b3…

MALICIOUS

PDF

35.1 KB Created: 2021-07-08 15:30:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: df97b83949f18fe60b2b7f2e5c1cad42 SHA-1: 359c61f5392bc1c0d4bf783a7b69cabffd8b583b SHA-256: dca22f1eb31fb0b37876797f5ebbd498e6115b5e6ed76a2b072cb7509c078543
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, including one identified as a malicious redirector leading to a 'game hack' lure. The document body and extracted URLs suggest a phishing attempt, likely to trick users into downloading malware or visiting scam sites. The presence of embedded URLs and the nature of the lures indicate a phishing campaign, likely delivered as an 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.tw/app/406889139/coin-master-home-game-hack In PDF document text
    • http://digilib.stimlog.ac.id/repository/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-download-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/buxblast-com-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-restaurant-tycoon-money-hack-website_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-free-rthros_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/the-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-roblox-com_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-many-free-spin-links-is-there-for-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-free-without-sign-in-no-download_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-roblox-t-sirde_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-net_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-earn-free-robux-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-get-minecraft-for-free-on-laptop_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-elemental-wars-free-rolls_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_off000033b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33B3 22936 bytes
SHA-256: 13262a61140bab3348674a04e100d771b3c053a7b7cbe2afde7d0a21bf81a3aa
font_01_sfnt_off0000673d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x673D 18092 bytes
SHA-256: ba905ac73eef98627ce31f9a61196988fba84150967a6aeb5bce2c15a28684d9

Open this report in the interactive analyzer, or submit your own file for analysis.