Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8970942a24e529c…

MALICIOUS

PDF

41.6 KB Created: 2021-05-13 13:02:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 29dcb5c419568ab738c8f3b676907cd0 SHA-1: be1fc282a9ae298b7deb53dde80dfba03132dc49 SHA-256: f8970942a24e529cae05e42fca611d0520d79891b2d1375601ca8338bd7f746c
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external websites, many of which are part of a link farm designed to attract users searching for game hacks and generators. The primary redirector URL, https://netcdn.xyz/app/431946152/free-roblox-scripts-game-hack, is flagged as malicious. The document's structure and embedded links strongly suggest a phishing or malware distribution attempt, likely leveraging a spearphishing attachment vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/free-roblox-scripts-game-hack In PDF document text
    • http://iricamidelcuore.it/images/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://iricamidelcuore.it/images/lucky-patcher-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://iricamidelcuore.it/images/free-daily-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://iricamidelcuore.it/images/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://iricamidelcuore.it/images/como-hackear-el-juego-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://iricamidelcuore.it/images/coin-master-hoe-to-get-extra-free-spins_GM406889139.pdfIn PDF document text
    • http://iricamidelcuore.it/images/coin-master-mod-version-free-download-2021_GM406889139.pdfIn PDF document text
    • http://iricamidelcuore.it/images/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://iricamidelcuore.it/images/hack-my-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://iricamidelcuore.it/images/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://iricamidelcuore.it/images/is-it-possible-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://iricamidelcuore.it/images/hack-coin-master-2021-pc_GM406889139.pdfIn PDF document text
    • http://iricamidelcuore.it/images/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://iricamidelcuore.it/images/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://iricamidelcuore.it/images/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://iricamidelcuore.it/images/free-spins-coin-master-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://iricamidelcuore.it/images/ways-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://iricamidelcuore.it/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://iricamidelcuore.it/images/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://iricamidelcuore.it/images/robux-generator-no-survey_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_003_off000046d9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46D9 24888 bytes
SHA-256: 8a0c72c8764d27b0822d5bca31a112473833537120757a12f7be3645c49e2c44
font_01_sfnt_off00008019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8019 18348 bytes
SHA-256: a05e51cd539dd6b301b45f7fb58cd288955602bf3cc953f1dc3d411cb11e51a1

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