Malicious PDF — malware analysis report

Static analysis result for SHA-256 fabbb9c77e7f0c5d…

MALICIOUS

PDF

46.0 KB Created: 2021-06-02 21:47:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e05e20cd38d8b91acb766d7b040443dc SHA-1: bc6557db3a0ad10d292d0dbb61ae5dcf017fda66 SHA-256: fabbb9c77e7f0c5dfd08fa2145f01cf0ac4272f06d03b73a27e5bade683fabdc
102 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are structured as a link farm, suggesting an attempt to drive traffic to malicious or deceptive content. The document body, though partially corrupted, contains references to game hacks and a URL that further supports this lure. The ML classifier strongly indicated maliciousness, and the presence of a download button heuristic reinforces the deceptive nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/431946152/roblox-destruction-simulator-hack-2021-game-hack PDF link annotation
    • https://forensicsinstitute.org/wp-content/uploads/fsqm-files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://forensicsinstitute.org/wp-content/uploads/fsqm-files/how-to-hack-back-into-your-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://forensicsinstitute.org/wp-content/uploads/fsqm-files/redeem-hack-roblox-2021-robux_GM431946152.pdfIn PDF document text
    • https://forensicsinstitute.org/wp-content/uploads/fsqm-files/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • https://forensicsinstitute.org/wp-content/uploads/fsqm-files/how-to-get-free-robux-without-subscribing_GM431946152.pdfIn PDF document text
    • https://forensicsinstitute.org/wp-content/uploads/fsqm-files/roblox-apoc-rising-skin-giver-hack_GM431946152.pdfIn PDF document text
    • https://forensicsinstitute.org/wp-content/uploads/fsqm-files/blox-piece-roblox-cheat_GM431946152.pdfIn PDF document text
    • https://forensicsinstitute.org/wp-content/uploads/fsqm-files/how-to-hack-roblox-and-get-unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • https://forensicsinstitute.org/wp-content/uploads/fsqm-files/how-to-get-any-free-catalog-item-in-roblox_GM431946152.pdfIn PDF document text
    • https://forensicsinstitute.org/wp-content/uploads/fsqm-files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://forensicsinstitute.org/wp-content/uploads/fsqm-files/how-to-use-cheat-engine-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://forensicsinstitute.org/wp-content/uploads/fsqm-files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://forensicsinstitute.org/wp-content/uploads/fsqm-files/roblox-create-free-vip-servers_GM431946152.pdfIn PDF document text
    • https://forensicsinstitute.org/wp-content/uploads/fsqm-files/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • https://forensicsinstitute.org/wp-content/uploads/fsqm-files/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • https://forensicsinstitute.org/wp-content/uploads/fsqm-files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://forensicsinstitute.org/wp-content/uploads/fsqm-files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://forensicsinstitute.org/wp-content/uploads/fsqm-files/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://forensicsinstitute.org/wp-content/uploads/fsqm-files/roblox-pokemon-brick-bronze-how-to-get-free-eve_GM431946152.pdfIn PDF document text
    • https://forensicsinstitute.org/wp-content/uploads/fsqm-files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • https://Buy.HoaxMC.comIn 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_004_off000052b2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52B2 25964 bytes
SHA-256: fbc2a4dff4ce176ee7fb5b178ca2bdbd9f8d95c03931fb9112d599a70339ddb8
font_01_sfnt_off00008de8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE8 19376 bytes
SHA-256: 60aef91bd2cc19665753b82e8d84ab878bbdba650f0575e99392a0147c862fd8

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