Malicious PDF — malware analysis report

Static analysis result for SHA-256 a43438df8fae078d…

MALICIOUS

PDF

44.3 KB Created: 2021-05-17 00:40:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f6282e3c2cd696d245eb9f28b0410599 SHA-1: 5538f06b90c3c79900d9605641abd08f3eaceab2 SHA-256: a43438df8fae078d21c731fd0e5eb42aa8698449cbe560372eec74b02646f299
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and potentially malicious domains, disguised as game hacks and free item generators. The heuristic firings indicate the PDF is designed to redirect users to malicious infrastructure, likely to download further malware or engage in phishing. Although no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a malicious intent to trick users into visiting harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/daily-free-spin-coin-master-link-game-hack In PDF document text
    • http://jackson-pr.com/images/minecraft-apk-android-free_GM479516143.pdfIn PDF document text
    • http://jackson-pr.com/images/where-can-i-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://jackson-pr.com/images/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://jackson-pr.com/images/reddit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/coin-master-35-13-hack-download_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://jackson-pr.com/images/free-games-like-roblox_GM431946152.pdfIn PDF document text
    • http://jackson-pr.com/images/all-free-items-in-roblox_GM431946152.pdfIn PDF document text
    • http://jackson-pr.com/images/how-to-hack-coin-master-game-without-verification_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://jackson-pr.com/images/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/coin-master-hack-unlimited-spins-and-coins-cheats_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/free-money-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://jackson-pr.com/images/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/minecraft-download-free-download_GM479516143.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_003_off000046ab.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46AB 24784 bytes
SHA-256: 8277d4716822fbeb0d88ef46b29880923d675635885ca9add978052b9d823cd4
font_01_sfnt_off00007fe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE7 2920 bytes
SHA-256: 601c50867a41b9362538ff18e5f9479a0f9badf698aaf1eb7e88469c11719db7
font_02_sfnt_off00008a01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A01 18476 bytes
SHA-256: 13087f23ced5a654764a402ace47e06b7ceeb886891228a443e0cb07dd9c4176

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