Malicious PDF — malware analysis report

Static analysis result for SHA-256 45ae1cfcc9373397…

MALICIOUS

PDF

42.6 KB Created: 2021-05-17 15:52:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: f492c59d0af896a0a5f8e405a9367f7c SHA-1: 1fcd8f5a54437e4533202a4b95b0733516922ab1 SHA-256: 45ae1cfcc93733975afe738c6f0e2644fbe1f0fb539025e3462f71bfafb853cd
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external sites, including a primary redirector disguised as a game hack generator. The document body and heuristics indicate a lure for free game currency, directing users to malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a malicious workflow designed to redirect users to potentially harmful content.

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/how-to-get-free-robux-with-no-verification-game-hack In PDF document text
    • http://artindex.pro/images/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://artindex.pro/images/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://artindex.pro/images/free-spin-links-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://artindex.pro/images/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://artindex.pro/images/free-spin-coin-master-online_GM406889139.pdfIn PDF document text
    • http://artindex.pro/images/minecraft-world-free-download_GM479516143.pdfIn PDF document text
    • http://artindex.pro/images/coin-master-hacks-no-surveys_GM406889139.pdfIn PDF document text
    • http://artindex.pro/images/free-coin-spin_GM406889139.pdfIn PDF document text
    • http://artindex.pro/images/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://artindex.pro/images/free-spins-on-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://artindex.pro/images/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://artindex.pro/images/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://artindex.pro/images/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://artindex.pro/images/coin-master-hack-2021-apk-download_GM406889139.pdfIn PDF document text
    • http://artindex.pro/images/roblox-free-items-glitch_GM431946152.pdfIn PDF document text
    • http://artindex.pro/images/hack-the-coin-master_GM406889139.pdfIn PDF document text
    • http://artindex.pro/images/coin-master-hack-version-apk-download_GM406889139.pdfIn PDF document text
    • http://artindex.pro/images/coin-master-promo-code-2021_GM406889139.pdfIn PDF document text
    • http://artindex.pro/images/coin-master-el-tiger-card-free_GM406889139.pdfIn PDF document text
    • http://artindex.pro/images/how-to-get-free-robux-easy_GM431946152.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_off0000476c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x476C 25236 bytes
SHA-256: 0b1e0809608eb2034f1e5083a8c5240d1c3e5d408709b36dbe09319fd2c7ef43
font_01_sfnt_off00008176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8176 19128 bytes
SHA-256: acb72b37f9b0a7ac0fa23716fb81d4af9379ab539551c05381b29cd372bdbe33

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