Malicious PDF — malware analysis report

Static analysis result for SHA-256 edca425e1f12c7c2…

MALICIOUS

PDF

42.9 KB Created: 2021-05-20 03:56:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 8f7da7f7fd575f1044e40d372b815e3d SHA-1: 23132769f2e03745d3d4861573b3316824440bd7 SHA-256: edca425e1f12c7c2fccd305465926809f52bcea183d5a7dfdfbe120f8185e2d8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links to redirectors and potentially malicious sites, disguised as generators for game hacks and virtual currency. The heuristic firings indicate that the PDF is designed to lure users to these external resources, which is a common tactic for distributing malware or conducting phishing. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/479516143/minecraft-cheat-client-game-hack In PDF document text
    • https://xiangquan.com.tw/image/data/files/my-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/cm-free-spins_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/pokemon-go-free-pokecoins-hack_GM1094591345.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-pe_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-play-online-free_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-get-100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/real-roblox_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/javascript-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-download-wurst_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-daily-free-spins-25_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000490c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x490C 28300 bytes
SHA-256: 01c98d67fc335eeadd8d227164179490033cba98e20d9bf77a41750cd04b433f
font_01_sfnt_off00008745.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8745 17808 bytes
SHA-256: ae4d3a4e8db3c535571974f20d29f774c055cc29dc4a6064f071376039008cf0

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