Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fda7df3a27beee5…

MALICIOUS

PDF

44.9 KB Created: 2021-06-03 07:58:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: df9d564e1f62c15a833ae0b6afb66d59 SHA-1: 7601591e821abcc78a5cc25acab8c1ccac93bd1a SHA-256: 7fda7df3a27beee5f6a793da87e6a907ac1a2573f9d55d14dc313cec4be27869
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links to websites offering game hacks and free in-game currency, a common social engineering tactic to trick users into visiting malicious sites. The 'SE_CLICKFIX' heuristic indicates the document may instruct users to execute commands, further suggesting a malicious intent to bypass security measures. While no scripts were directly extracted, the PDF structure and embedded links strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 6

  • 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.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/479516143/how-to-get-minecraft-for-free-on-computer-game-hack PDF link annotation
    • http://library.umla.ac.id//repository/how-to-download-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-hack-apk-ios-download_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-mod-free-download_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/real-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-hack-quora_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/hack-coin-master-8-ball-pool_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-download_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-games-like-roblox_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-get-real-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/robux-no-survey_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-ultra-attack-hack_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-free-spins-link-2021-april_GM406889139.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_off0000543e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x543E 24976 bytes
SHA-256: 398976b5f6455d2f16c6a5be02c6458c4f9ca3e299bfaec3871537c4f1a4e4ae
font_01_sfnt_off00008cb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB4 18452 bytes
SHA-256: fce6c86cc1ad63ab9ce068c6620c453958f48a84b612bdc7216287e66eae0497

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