Malicious PDF — malware analysis report

Static analysis result for SHA-256 896f0f28066786ee…

MALICIOUS

PDF

41.2 KB Created: 2021-05-19 08:22:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d109d4ec40e469ed7dcbdfc4d1a05a70 SHA-1: 64999f81e34bfb883eea49f34b44507d9a6da52b SHA-256: 896f0f28066786ee94fc8caccf43f67dd9b0dcfd9065e3c0aa4cc3fefc05fb2c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'Pokemon Go Free Promo Codes' and embeds a large number of external links, many of which point to other PDF files. This behavior is indicative of a link farm or a mechanism to redirect users to potentially malicious content. The ML classifier also strongly flagged this PDF as malicious.

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/1094591345/pokemon-go-free-promo-codes-game-hack PDF link annotation
    • http://zarinnameh.ir/images/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/roblox-moderators_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-spin-gratis-coin-master_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-free-spins-link-2021-twitter_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/links-to-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-robux-without-any-verification_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_off0000498f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x498F 23888 bytes
SHA-256: 20a7f7b20d9e521ffeb554dd453d5881bb064ba959684bed59aebb5d5f56dd8e
font_01_sfnt_off00007f9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F9E 18016 bytes
SHA-256: c297f090964595d88bb9e468e006b0465d004428cd8c6c723c779f2c72fec1d4

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