Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d9fcd6077cf98f2…

MALICIOUS

PDF

42.7 KB Created: 2021-05-17 01:37:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a047f095342f98e07149d69442147e76 SHA-1: 8de648b4f1bd98a1da953ed26f11e18d02b36af9 SHA-256: 1d9fcd6077cf98f27c22e91a9cdf6ffea212e45cc1d745a348866ac2b2078474
220 Risk Score

Malware Insights

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

The PDF document contains links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'generators'. It also includes a lure to recover secret information, such as private keys or passwords. The presence of embedded URLs and the nature of the lures suggest an attempt to trick users into revealing sensitive data or visiting potentially harmful sites, likely as part of a phishing or credential harvesting campaign.

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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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-link-game-hack In PDF document text
    • http://ines.co.rs/images/what-games-give-you-robux_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/free-roblox_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/coin-master-game-hack-link_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/free-roebucks-no-human-verification_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/coin-master-freebies_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/roblox-promo-codes-2021-robux_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/levvvel-coin-master_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/coin-master-heaven-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/coin-master-free-spins-link-quora_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/play-coin-master_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/coin-master-free-spins-only_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_off00004ae5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AE5 26124 bytes
SHA-256: 74ff9ed440994b038d2e12052d11265fb08d4ec50a1db22a45623340dd2152f3
font_01_sfnt_off0000863f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x863F 17716 bytes
SHA-256: c15a8689411d8cca9ab0759ab4c496fe9b4353d676dd738e300719e9588112ed

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