Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9cb817f16232c20…

MALICIOUS

PDF

47.4 KB Created: 2021-05-12 10:31:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: abaad0bcb11fa3ba40b96600e110889e SHA-1: 6b42ab3cf45c4fb08dad512efee275c4e0efc377 SHA-256: f9cb817f16232c2015b08e2d2282e83161ead4c81b91817c9b079a2cf0171486
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a known malicious redirector, disguised as "game hacks" and "free spins" to lure users. The document body and embedded URLs strongly suggest a phishing or scam attempt, likely leading to further malware download or credential harvesting. No scripts were extracted, but the presence of malicious links and the lure indicate a high likelihood of a malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/coin-master-cheat-to-get-free-spins-game-hack In PDF document text
    • http://emilac.com/images/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://emilac.com/images/coin-master-link_GM406889139.pdfIn PDF document text
    • http://emilac.com/images/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://emilac.com/images/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • http://emilac.com/images/free-roblox-animations_GM431946152.pdfIn PDF document text
    • http://emilac.com/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://emilac.com/images/coin-master-hack-android_GM406889139.pdfIn PDF document text
    • http://emilac.com/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://emilac.com/images/how-to-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://emilac.com/images/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://emilac.com/images/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • http://emilac.com/images/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://emilac.com/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://emilac.com/images/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • http://emilac.com/images/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://emilac.com/images/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://emilac.com/images/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://emilac.com/images/download-coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://emilac.com/images/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://emilac.com/images/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048b0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48B0 30120 bytes
SHA-256: 1037b7551a2c0fd91e9482548b8c621d1c1f90ae78bd5c456df85c5a42958183
font_01_sfnt_off00008b2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B2B 3560 bytes
SHA-256: c953d730e49f69c7d62e02a926729ae4a31de13d9a976dc4a95b39cf47066c93
font_02_sfnt_off000097b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97B1 18052 bytes
SHA-256: 99031f52a6b201c4974ba9c8c658527515774d5dd8e7ce964a5a3577c3d49f57

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