Malicious PDF — malware analysis report

Static analysis result for SHA-256 84359aeb70e0d35c…

MALICIOUS

PDF

39.6 KB Created: 2021-05-20 05:33:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2459678c76a96041917cfb461501859f SHA-1: 7d09c862bb863a03f6d93dd6fd500b9b94c229a7 SHA-256: 84359aeb70e0d35c2277c8ef5f83aa277d0bcf7e5b24fb9fb87e630e86d23fa3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors, disguised as offers for game hacks and free currency. The primary lure is for 'Coin Master' game hacks, directing users to a known malicious URL. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or malware distribution attempt, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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.xyz/app/406889139/where-can-i-get-free-spins-for-coin-master-game-hack In PDF document text
    • http://www.homesweethome.pl/images/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/apk-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/minecraft-free-version-pc_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/rewards-roblox-com_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/robux-scam_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-daily-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/http-bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-fire-coin-master_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-gold-cards-free_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_002_off00004179.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4179 24436 bytes
SHA-256: d7404206d2fecfc5a0afecf0d73c84e651e358c91eb763acd3e48dd77b0fd25f
font_01_sfnt_off000078f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78F3 18248 bytes
SHA-256: 8779a24c74e66c23b33121dd1a71955adfc2f322ab09b0870da4a74651533123

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