Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d1f165c76225a25…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 17:23:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: da7bab8a5caca60f52289ddecb1e3eb8 SHA-1: 0a67847c93aceb72ae45f79bbfe894434d400e92 SHA-256: 7d1f165c76225a25627db7db3eaf72b4f324b53077079700c7f36399ec5c4c0a
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The heuristic findings indicate these links are associated with known malicious redirectors and lures for game-related exploits. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting these sites, likely as a precursor to further malicious activity such as malware download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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 http://netcdn.tw/app/431946152/hacker-de-robux-para-roblox-real-game-hack In PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/obby-gives-you-free-robux-no-password-required-2021-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/roblox-free-robux-giver_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/minecraft-complete-handbook_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/hacks-for-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/100-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-hack-roblox-tutorial_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/body-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/offers-to-complete-and-get-free-spins-in-coin-master_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_002_off00002f37.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F37 22508 bytes
SHA-256: 1e786401c598adf138410504af34f9856b351cc24862bc46a504871f836c31a1
font_01_sfnt_off00006152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6152 19116 bytes
SHA-256: 664a5a8f0c6052bfe9185cf0e3a72e47f8f9ff659383c84ff4f88d17c3a610ac

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