Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0209655c9c9862f…

MALICIOUS

PDF

35.7 KB Created: 2021-06-25 16:57:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 21e17e883deecec482b9a70fc1dc5aa7 SHA-1: 44172795d97c378da47f9fbaf532b36cfbb245b0 SHA-256: d0209655c9c9862f63e82efea9e0ca6d610f10f9a418deac3d38aa6ebb8d930b
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to websites and other PDFs that promise free in-game currency or hacks, a common lure for phishing and malware distribution. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' specifically flags a link to a known malicious redirector, indicating a high likelihood of malicious intent. While no scripts were extracted, the document body and heuristics strongly suggest a social engineering attack designed to drive traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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-survey-no-download-2021-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/pokemon-go-free-mewtwo-hack_GM1094591345.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/pokemon-brick-bronze-roblox-where-to-find-exp-share-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/20210-free-spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/get-free-spins-on-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/androeed-ru-minecraft_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/pubg-uc-shop-myanmar_GM1330123889.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-hack-game-download-ios_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-hack-roblox-games_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_off00003269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3269 22244 bytes
SHA-256: c599708c0ec84fb79cd07bb97071206162847b354653fb5bf8a436a8804a77bc
font_01_sfnt_off0000638b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x638B 19992 bytes
SHA-256: 6d9df21f213c68c47efbc66cb38cb74e2c32c2346c4ea41e461dae4f6c3768ee

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