Malicious PDF — malware analysis report

Static analysis result for SHA-256 954971eed227e4c7…

MALICIOUS

PDF

49.2 KB Created: 2021-06-11 00:15:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 766087151bc2390fd7860817ea7d0d25 SHA-1: 3461e8221508362918efcf5a8a58d2bde9990695 SHA-256: 954971eed227e4c7cb4c3e0721a707d4ee3736fb529804b2fbb7c8d1f89337e9
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external sites, including a known malicious redirector, masquerading as game hacks and generators. The heuristic firings indicate a lure for free game items and hacks, with a high ML score confirming maliciousness. The document body and embedded links suggest a phishing or scam attempt to drive traffic to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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 https://netcdn.tw/app/431946152/roblox-hack-downland-game-hack In PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/wanna-join-my-free-giftcard-giveaway-roblox-id-audio-durv_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-minecraft-quiz_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/hack-version-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/hacks-counter-blox-roblox-offensive-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-no-buying-things_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-2021-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000536d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x536D 26412 bytes
SHA-256: f831f0d500315c2a749458a88f0f6081713391d5af42501db877c35605b603ca
font_01_sfnt_off00008ef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EF7 4016 bytes
SHA-256: d86d7dd4e322525e04c25fcfa6743908eb068b70657cde876d7dc7877c4666d7
font_02_sfnt_off00009c12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C12 18688 bytes
SHA-256: 777ecd9bf4cba19c66ac3b03e370a33bd01ed4cf882c145341853d771ac6f80e

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