Malicious PDF — malware analysis report

Static analysis result for SHA-256 d34f62dae5d9d79d…

MALICIOUS

PDF

49.2 KB Created: 2021-06-09 14:02:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 19a04d551bd225445da01efedb2e323c SHA-1: 3037432e10a37f449b9328fa3fd04b445e05cd33 SHA-256: d34f62dae5d9d79d9ef8feec484c284514a7a12866fb866dacb72d9ce7aaa518
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free game currency and hacks, directing users to a known malicious redirector. The document body and embedded links strongly suggest a phishing or scam attempt designed to lead users to potentially harmful content. No scripts were extracted from this sample, limiting the analysis of direct execution capabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/free-accounts-for-roblox-with-robux-2021-game-hack In PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/how-to-get-robux-for-free-without-verification_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/speed-hack-francais-roblox_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/is-there-any-actual-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/how-to-get-hacks-on-midieval-roblox-2021_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/descargar-roblox-hack-version-2385-apk_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/how-to-exploit-roblox-with-cheat-engine-64_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/seraph-roblox-hack_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/free-roblox-undertale_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/100-working-free-roblox-coin-gen_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/does-roblox-hack-me-put-a-virus-on-your-computer_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/how-to-hack-gamingwithkev20219-in-roblox_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/roblox-gun-hack_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/roblox-hack-downloads-free_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/free-roblox-dispenser_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/how-to-hack-in-unboxing-simulator-roblox_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/free-robux-no-password-no-survey_GM431946152.pdfIn PDF document text
    • https://tangthuphathoc.net/wp-content/uploads/fsqm-files/free-tiktok-followers-generator_GM835599320.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005622.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5622 25520 bytes
SHA-256: b3862da4325d835f744ce2dd556310e7f4e61b7b2585a2c46b2a12607933f3e6
font_01_sfnt_off000090f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90F0 2984 bytes
SHA-256: 889cfc2fd0afa9ea114d6666204c6ce0548d0aae2cba345827d317498c4c06bc
font_02_sfnt_off00009b1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B1C 19076 bytes
SHA-256: 7496aa8f0eed262bfc40724907cd8ab858d888f04adbed61f0f6a2b5ba04428a

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