Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f30bd3ad89a2bb5…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 00:07:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: edc58ceee9148572fc533e864b0625a3 SHA-1: 89d871f69b4bbbe4f7d314aeb8ee597a0d317ea0 SHA-256: 7f30bd3ad89a2bb586fc7789823debac1cb262982c7f29bdfcee4cbf71ab8379
240 Risk Score

Malware Insights

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

This PDF document contains numerous links, including one pointing to a known malicious redirector infrastructure at http://netcdn.tw/app/431946152/free-robux-games-on-roblox-game-hack. The document body and heuristics indicate a lure for game hacks and free items, designed to trick users into clicking these links. The presence of multiple links to external PDFs suggests a link farm intended to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • 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.
  • 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.
  • 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
  • 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-robux-games-on-roblox-game-hack In PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/pokemon-go-free-coin-promo-code_GM1094591345.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/roblox-shinobi-life-free-spins_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/coin-master-pro-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/free-roblox-fan-shirt_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/how-to-hack-accounts-on-roblox-july-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/coin-master-game-legitimate-hack-without-signing-up-or-shareing_GM406889139.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/robux-game-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/how-to-do-you-get-a-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/free-roblox-clothes-templates-pants-galaxy_GM431946152.pdfIn PDF document text
    • https://elearning.man1samarinda.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D9 22220 bytes
SHA-256: adbffa0e239fc5dd8e798c9a3850b723f1728c8e55a157c2fc87d5d0b1063576
font_01_sfnt_off0000624c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x624C 19052 bytes
SHA-256: 56f4e65812c403ac511da7c683eb66c8172328fd08918d47063ad90a487708b4

Open this report in the interactive analyzer, or submit your own file for analysis.