Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b0ad8e0234a6a72…

MALICIOUS

PDF

47.2 KB Created: 2021-05-12 08:01:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 2ebf3b1c7bab0cf941e826604481e948 SHA-1: f86bac339c78123ba3e90fb38f8f47ba215f275c SHA-256: 7b0ad8e0234a6a72c80802254cedb655315c69305a9922c528a6a35a86485808
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure. The file embeds a large number of external links characteristic of an SEO link farm, routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 6

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.xyz/app/431946152/free-robux-kid-friendly-no-human-verification-game-hack PDF link annotation
    • http://lib.unwahas.ac.id/repository/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/www-rbxhut-com_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/no-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/is-minecraft-vr-free_GM479516143.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-hack-without-downloading-apps_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/collect-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/free-robux-generator-2021_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a7e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A7E 25752 bytes
SHA-256: 1e16d130875a589eaf8c6f300e10f071a5cfad1a5cd2f40d994d6fe6e1be2d55
font_01_sfnt_off000085ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85CE 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off000092df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92DF 19288 bytes
SHA-256: ea469787df873758e357019bb53a1e3c4242eb718badaf8706c42bdc2f61c813

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