Malicious PDF — malware analysis report

Static analysis result for SHA-256 68fdc6fdb658b959…

MALICIOUS

PDF

43.0 KB Created: 2021-05-13 17:37:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: aeda3bb369b2556f436a2562bbaa2f26 SHA-1: 5985b6222c927bdd014c63fa4b135f117e641892 SHA-256: 68fdc6fdb658b9591857979c567d9851a5c04973bcdebc446bee727cc5e424aa
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs and a specific external URI pointing to domains associated with free game currency or hacks, indicating a phishing or scam attempt. The presence of a 'download button' heuristic further supports this, suggesting the document is designed to trick users into clicking links. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • 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
  • 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/479516143/minecraft-coins-free-game-hack PDF link annotation
    • http://grugliascogiovani.org/images/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://grugliascogiovani.org/images/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://grugliascogiovani.org/images/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://grugliascogiovani.org/images/what-is-wurst_GM479516143.pdfIn PDF document text
    • http://grugliascogiovani.org/images/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://grugliascogiovani.org/images/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • http://grugliascogiovani.org/images/coin-master-hack-unlimited-spins-apk_GM406889139.pdfIn PDF document text
    • http://grugliascogiovani.org/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://grugliascogiovani.org/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://grugliascogiovani.org/images/free-robux-now_GM431946152.pdfIn PDF document text
    • http://grugliascogiovani.org/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://grugliascogiovani.org/images/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://grugliascogiovani.org/images/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • http://grugliascogiovani.org/images/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://grugliascogiovani.org/images/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://grugliascogiovani.org/images/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://grugliascogiovani.org/images/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://grugliascogiovani.org/images/free-gold-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://grugliascogiovani.org/images/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://grugliascogiovani.org/images/how-to-play-minecraft-for-free_GM479516143.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_off00004dc9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DC9 26336 bytes
SHA-256: 4e5a48c1ba5c16555fcdd59c65b1b80a92aaebc1cb0392057bd3195da62ee230
font_01_sfnt_off0000878a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x878A 17712 bytes
SHA-256: f11cf7a31a005d7bc14b9508c64b9243aa3fd98d87a18c3c2fdef7c62eb0ce9c

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