Malicious PDF — malware analysis report

Static analysis result for SHA-256 935399f36d01b097…

MALICIOUS

PDF

35.1 KB Created: 2021-07-07 08:39:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 7f53cfbde2a663653e43566224a46e73 SHA-1: 273ef1d6bbfd13bc7098bcefed7feb33bdf62cb1 SHA-256: 935399f36d01b0970e03007915f286072083772b20b762f1412b6e95debedcde
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and generators to entice users. It contains embedded links that redirect to malicious infrastructure, specifically http://netcdn.tw/app/431946152/free-gfx-roblox-game-hack. The document body and heuristics indicate a social engineering tactic to drive users to potentially harmful content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/free-gfx-roblox-game-hack In PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/roblox-booga-booga-mojo-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/coin-master-hacks-to-get-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/daily-free-coin-and-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/coin-master-free-spins-2021-haktuts_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/roblox-free-items_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/building-games-like-roblox-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/free-robux-generator_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/minecraft-hacked-apk_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/coin-master-hack-version-download-2021-android_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/coin-master-free-spins-april-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/coin-master-hack-progamers_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1kabbekasi.com/__statics/gudangsoal/files/free-minecraft-alts_GM479516143.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
font_00_sfnt_off00003385.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3385 22384 bytes
SHA-256: a96e324cd14c22f58d696ca3e47043f4c17b81ab3e7a3af4372a1a72d438363e
font_01_sfnt_off00006583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6583 18652 bytes
SHA-256: 0d63b7d195b4368a7510cc9063280e633f1dd81e04eecc72eeca598e4957848f

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