Malicious PDF — malware analysis report

Static analysis result for SHA-256 92a0edef0b6773f6…

MALICIOUS

PDF

42.6 KB Created: 2021-05-10 14:00:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: b271e90fd9e50b6e314e613fb478ad62 SHA-1: e8fe5c9c2d40bd5a67421ced0f1fbf10bafd7662 SHA-256: 92a0edef0b6773f654616256e7ebe0910c8b5f8971e58a8c7b506a5d010df79f
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and SEO link farms, masquerading as game hacks and free currency generators. The document body, though partially corrupted, contains references to these lures and embedded URLs. The primary function appears to be redirecting users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • 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.xyz/app/406889139/coin-master-free-daily-spins-link-game-hack In PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/coin-master-daily-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/hackear-coin-master-sin-verificacion_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/roblox-script-hacks_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-free-spins-link-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-20-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/try-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/minecraft-java-edition-free-code_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/rewards-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/free-robux-generator-com-roblox-hack_GM431946152.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
stream_003_off00004b06.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B06 24632 bytes
SHA-256: d7410e519a657c33dc92e1123c39b1b3f71a8863851b6f9442c7717157a71299
font_01_sfnt_off0000838d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x838D 18476 bytes
SHA-256: 219409e4a96e727ac7d03afbf10b928993c8ec078f24206d8d8724722cb954a1

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