Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f729292248f7122…

MALICIOUS

PDF

45.7 KB Created: 2021-06-04 00:46:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1aceb4e621cc83bcd438bf95cfef562c SHA-1: a54aacccc63b4597d09f63dfc95164d70857f920 SHA-256: 2f729292248f7122a6013e0c168886092f79d674c9c2aac111503107eae02234
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are SEO-optimized and related to game hacks and free in-game currency. The ML classifier strongly indicates maliciousness, and the presence of external URIs suggests a potential phishing or scam attempt. The document body, though partially corrupted, contains a URL that aligns with the lure of obtaining free Robux.

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.online/app/431946152/how-to-get-free-robux-on-pc-game-hack
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spins-promo-code_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/get-free-robux-2021_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id/repository/roblox-hack-me_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/how-to-hack-into-someones-roblox-account_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/hack-coin-master-online_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spins-2021-blogspot_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id/repository/minecraft-bedrock-free-with-java_GM479516143.pdf
    • http://libsmpn1balongpo.sch.id//repository/free-roblox-money_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/how-to-hack-someone-on-roblox_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/coin-master-daily-free-spins-link-2021_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/robux-com-roblox_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spins-app_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spins-save_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/free-minecraft-severs_GM479516143.pdf
    • http://libsmpn1balongpo.sch.id//repository/roblox-free-robux-no-human-verification_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/free-robux-with-no-verification-2021_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id/repository/how-to-get-the-lamborghini-in-roblox-jailbreak-free_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/pokemon-go-free-online-download_GM1094591345.pdf
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-cards-link_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005609.bin
f878da2f8975c5b750998263321dbbedfa8a0fe1cac2559de6566609143ac19d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5609 25200 bytes
font_01_sfnt_off00008fc4.bin
3da4067756d8a9659bbf1d91e8f5987ff560a340f178cc4f41ff3c3676747205		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FC4 18436 bytes

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