Malicious PDF — malware analysis report

Static analysis result for SHA-256 701aac9a587c59bf…

MALICIOUS

PDF

44.5 KB Created: 2021-06-04 01:04:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 79315cf9ac8fe6404fe733a40d1ac365 SHA-1: b430861ac317f97d306aa2c4dff4fa67cf38b308 SHA-256: 701aac9a587c59bf9da0d4c56b87c18841979e2f74359974a739e9893f9bdcd9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and 'generators'. The ML classifier also flagged this PDF as malicious. The presence of multiple links to potentially malicious domains suggests a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/431946152/how-do-you-hack-roblox-game-hack In PDF document text
    • https://digilib.stimlog.ac.id/repository/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/freespinandcoin_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/robux-offers_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/pubg-uc-key_GM1330123889.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-redeem-code-for-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-coin-master-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/mcpe-client_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-free-spins-link-2021-app_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/flip-master-coins-hack_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_off0000500c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x500C 24948 bytes
SHA-256: 3c7eb5af6282391567a9c55994845bc4bc0077b1b8dafdae75e1a7e048b31653
font_01_sfnt_off0000896c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x896C 18816 bytes
SHA-256: d27b94fe1a8c05d6feb56d9a091a96145976f0feb7173cb46f16c8470fe3a7d8

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