Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b1f956e567e2088…

MALICIOUS

PDF

43.5 KB Created: 2021-05-13 22:38:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: ec850cccc4e17ef3d111a21029a117de SHA-1: b6343e8ad4e331c92bedca4fac925fc1d1526a7a SHA-256: 9b1f956e567e208822bf1c167da54fa64570ac6f798fa76c1ecba55dee9657d8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains links that redirect to malicious infrastructure, specifically promoting 'game hacks' and generators. The primary link identified is https://netcdn.xyz/app/406889139/coin-master-hack-ios-no-human-verification-game-hack, which is associated with known malicious redirector activity. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering tactic to trick users into downloading further malicious content or visiting compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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-hack-ios-no-human-verification-game-hack In PDF document text
    • http://ferienwohnung-walker.de/images/coin-master-60-spins_GM406889139.pdfIn PDF document text
    • http://ferienwohnung-walker.de/images/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://ferienwohnung-walker.de/images/toolbox-mod_GM479516143.pdfIn PDF document text
    • http://ferienwohnung-walker.de/images/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • http://ferienwohnung-walker.de/images/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
    • http://ferienwohnung-walker.de/images/coin-master-hoe-to-get-extra-free-spins_GM406889139.pdfIn PDF document text
    • http://ferienwohnung-walker.de/images/spin-coin_GM406889139.pdfIn PDF document text
    • http://ferienwohnung-walker.de/images/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://ferienwohnung-walker.de/images/inappropriate-roblox-games_GM431946152.pdfIn PDF document text
    • http://ferienwohnung-walker.de/images/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://ferienwohnung-walker.de/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://ferienwohnung-walker.de/images/how-to-get-stuff-that-cost-coins-free-mcpe-master_GM406889139.pdfIn PDF document text
    • http://ferienwohnung-walker.de/images/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://ferienwohnung-walker.de/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://ferienwohnung-walker.de/images/coin-master-free-coins-and-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://ferienwohnung-walker.de/images/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://ferienwohnung-walker.de/images/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • http://ferienwohnung-walker.de/images/rewards-roblox_GM431946152.pdfIn PDF document text
    • http://ferienwohnung-walker.de/images/oprewards-com-robux_GM431946152.pdfIn PDF document text
    • http://ferienwohnung-walker.de/images/coin-master-hack-dot-xyz_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off00004b4d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B4D 26444 bytes
SHA-256: a0c751af4cbfaed0b85e3744d0ab8c78ac63db58dde96a46b5bdee3cca17b7ce
font_01_sfnt_off000087c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C5 18248 bytes
SHA-256: 0e2f08fbfaf79afb1572705eb5799f41bcba8b5506d26f042cd240ae7feb21e3

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