Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a8cedae6794d399…

MALICIOUS

PDF

46.7 KB Created: 2021-06-08 12:42:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: d14bc9853a9c8ea16d71b61b6141831e SHA-1: 6a8f3067b1267e2bc3e560faf3a9e368041e2208 SHA-256: 8a8cedae6794d399df132319efe5e8032a1e78f1c8de684f785a8cebf9b79166
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and generators to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which in turn serves further malicious PDF files. No scripts were extracted, but the document's structure and embedded URLs strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

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-cheat-pubg-game-hack In PDF document text
    • https://elearningman2jember.com/__statics/gudangsoal/files/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://elearningman2jember.com/__statics/gudangsoal/files/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://elearningman2jember.com/__statics/gudangsoal/files/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • https://elearningman2jember.com/__statics/gudangsoal/files/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://elearningman2jember.com/__statics/gudangsoal/files/free-minecraft-mods-for-xbox-one_GM479516143.pdfIn PDF document text
    • http://elearningman2jember.com/__statics/gudangsoal/files/minecraft-book-collection_GM479516143.pdfIn PDF document text
    • https://elearningman2jember.com/__statics/gudangsoal/files/master-coins-free_GM406889139.pdfIn PDF document text
    • https://elearningman2jember.com/__statics/gudangsoal/files/coin-master-hack-fast_GM406889139.pdfIn PDF document text
    • http://elearningman2jember.com/__statics/gudangsoal/files/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://elearningman2jember.com/__statics/gudangsoal/files/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.pdfIn PDF document text
    • http://elearningman2jember.com/__statics/gudangsoal/files/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • https://elearningman2jember.com/__statics/gudangsoal/files/free-minecraft-skins-pc_GM479516143.pdfIn PDF document text
    • http://elearningman2jember.com/__statics/gudangsoal/files/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://elearningman2jember.com/__statics/gudangsoal/files/how-to-hacked-to-stop-getting-killed-in-roblox_GM431946152.pdfIn PDF document text
    • http://elearningman2jember.com/__statics/gudangsoal/files/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • https://elearningman2jember.com/__statics/gudangsoal/files/coin-master-tiradas-gratis-2021_GM406889139.pdfIn PDF document text
    • http://elearningman2jember.com/__statics/gudangsoal/files/free-coin-master-game_GM406889139.pdfIn PDF document text
    • https://elearningman2jember.com/__statics/gudangsoal/files/how-to-hack-coin-master-android_GM406889139.pdfIn PDF document text
    • https://elearningman2jember.com/__statics/gudangsoal/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://elearningman2jember.com/__statics/gudangsoal/files/minecraft-bedrock-edition-free_GM479516143.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fa1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FA1 24524 bytes
SHA-256: eaa320739ddaec5a88a6d48097d6354b67500f2ed5dc1cf47429c8c5864eaaa1
font_01_sfnt_off00008845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8845 2836 bytes
SHA-256: fd98c8f6e7c2e74bbd5822409159a93ac5c94da083ae4c2eb269d4284375f9e8
font_02_sfnt_off000091eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91EB 18864 bytes
SHA-256: 15a5bca93491a682c1bf46305ee73cc7ab04e48745db3e6f3fb95150c6f1ad16

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