Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a51ca82d693b6e7…

MALICIOUS

PDF

45.3 KB Created: 2021-06-10 13:44:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 22f4fa3fb829abcba08751d52a980f43 SHA-1: d0cddd7b795e4abe2033d846e36f5c19e0962f4f SHA-256: 0a51ca82d693b6e7455c25f9090081ba512a003cee0bd806e15e77836c0c5b08
160 Risk Score

Malware Insights

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

This PDF document employs a lure related to game hacks and generators, directing users to a malicious redirector. The primary heuristic firings indicate that the PDF contains links to known malicious infrastructure and is designed to trick users into clicking through to potentially harmful content. The document body, though heavily obfuscated, contains references to the lure and embedded URLs, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/roblox-hack-accounts-online-game-hack In PDF document text
    • https://sanjoseelectricians.net/images/best-free-injector-roblox_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-get-1-million-in-jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/free-robux-windows-7_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/cool-roblox-high-school-cheats_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/car-speed-hack-roblox_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-become-a-roblox-hacker-free-on-pc_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-get-free-robux-without-tix_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-hack-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/attack-on-titan-project-hack-roblox_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-hack-lola202198-roblox_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-get-money-on-roblox-with-cheat-engine-63_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/free-robux-vido_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/roblox-free-admin-hack-2021_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/dragon-ball-ultimate-roblox-max-stats-hack-2021_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/roblox-lua-scripting-book-free_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-get-bloxburg-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/hack-roblox-electrick-state_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/roblox-prevent-fly-hacks_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/free-roblox-codes-that-work_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-get-a-free-roblox-group_GM431946152.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_004_off000052fe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52FE 25288 bytes
SHA-256: 1e8c7afe7c3ef01367a3ce5757a361ef9f913ce90ca56c17ae0aa7415e05b9f7
font_01_sfnt_off00008dc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DC9 18544 bytes
SHA-256: 0af37deb195847ba03eb6667677c44033df1ced6d3c80b685452f8d91c94aa1e

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