Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fba93dbfdfba12b…

MALICIOUS

PDF

45.2 KB Created: 2021-05-10 17:02:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 80c3f1c50b5bf24dbdcf716f3da32bc3 SHA-1: 7fc086cae5939b71c6dbbad959307cfcf47102f0 SHA-256: 6fba93dbfdfba12b91e817313b108f791344da794c8e42bec40426e93cfb1a91
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of 'free generators' or 'game hacks'. The primary malicious URL identified is https://netcdn.xyz/app/431946152/google-how-do-you-get-free-robux-game-hack, which is associated with a game hack lure. The document body, though heavily obfuscated, contains references to similar lures and URLs, suggesting a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.xyz/app/431946152/google-how-do-you-get-free-robux-game-hack In PDF document text
    • https://mylittlebigthing.com/assets/images/posts/uploads/files/coin-master-gold-cards-free-link_GM406889139.pdfIn PDF document text
    • https://mylittlebigthing.com/assets/images/posts/uploads/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • https://mylittlebigthing.com/assets/images/posts/uploads/files/free-diamonds-coin-master_GM406889139.pdfIn PDF document text
    • https://mylittlebigthing.com/assets/images/posts/uploads/files/minecraft-app-free-download_GM479516143.pdfIn PDF document text
    • https://mylittlebigthing.com/assets/images/posts/uploads/files/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • https://mylittlebigthing.com/assets/images/posts/uploads/files/como-hackear-coin-master-sin-verificacion-humana_GM406889139.pdfIn PDF document text
    • https://mylittlebigthing.com/assets/images/posts/uploads/files/free-robux-scams_GM431946152.pdfIn PDF document text
    • https://mylittlebigthing.com/assets/images/posts/uploads/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://mylittlebigthing.com/assets/images/posts/uploads/files/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • https://mylittlebigthing.com/assets/images/posts/uploads/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://mylittlebigthing.com/assets/images/posts/uploads/files/spins-coin-master_GM406889139.pdfIn PDF document text
    • https://mylittlebigthing.com/assets/images/posts/uploads/files/free-25-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://mylittlebigthing.com/assets/images/posts/uploads/files/cute-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://mylittlebigthing.com/assets/images/posts/uploads/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://mylittlebigthing.com/assets/images/posts/uploads/files/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://mylittlebigthing.com/assets/images/posts/uploads/files/coin-master-free-spins-link-download-free_GM406889139.pdfIn PDF document text
    • https://mylittlebigthing.com/assets/images/posts/uploads/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://mylittlebigthing.com/assets/images/posts/uploads/files/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • https://mylittlebigthing.com/assets/images/posts/uploads/files/free-coin-master-spins-no-verification_GM406889139.pdfIn PDF document text
    • https://mylittlebigthing.com/assets/images/posts/uploads/files/rape-simulator_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b1f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B1F 28688 bytes
SHA-256: a5172b521a459a87b902edf1f00cc7573ba867818cbf068e6f858a3fd7e8c4c5
font_01_sfnt_off00008c65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C65 18972 bytes
SHA-256: 7e42234451cc840f7005e057c881a5adaeb6eb05dfbb8a23217c49a1ae6b06df

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