Malicious PDF — malware analysis report

Static analysis result for SHA-256 1976ccc6f0f130f3…

MALICIOUS

PDF

46.7 KB Created: 2021-06-04 00:13:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 0a06fe2ac7fb5b3be041c2bd5207a448 SHA-1: 17ddaa415a26988443102134357d5a8a9a96c62b SHA-256: 1976ccc6f0f130f37bb3b618971fd29cb4bf9b6ff73acb3015eb1062aa380c40
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, masquerading as a 'free generator' or 'game hack' lure. The document body and embedded URLs strongly suggest a phishing or scam attempt to trick users into visiting malicious websites. No scripts were extracted, but the presence of malicious links and the lure indicate a high likelihood of further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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/431946152/how-to-get-free-roblox-hair-game-hack In PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-survey-for-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-now_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/lots-of-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-do-you-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-avatar-com_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-link-spin_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-game-free_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/pokemon-go-free-download-game_GM1094591345.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-free-spin-27_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-apocalypse-rising-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
stream_004_off000051e9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51E9 28516 bytes
SHA-256: fd310a75c7f03569ccf1342c9ce38b630953940e5c4d5cf62544ec458c01d2b2
font_01_sfnt_off0000934d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x934D 18564 bytes
SHA-256: ea47dc0c1edfbc9ae5bf1a2aa7313d2e96bd533affdbf7eb9c043917809be324

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