PDF malware analysis — malicious · 45f106f8044eb653

MALICIOUS

PDF

46.8 KB Created: 2021-06-07 20:34:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 334c3b612a37bed5de14fc4f6bdf24f2 SHA-1: 322c47f6d70d2bd89a76cd16cc7f263248059920 SHA-256: 45f106f8044eb653bece87b050551e81f9e87fd1145c96bee2e88aa2cdf3de77

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links and a document body that promotes hacking game currency, indicating a phishing or scam attempt. The presence of a large number of external links, many with numeric slugs, suggests a link farm designed to attract traffic. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious lure, likely leading to a compromised website or a download of further malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/how-to-hack-robux-into-your-account-game-hack PDF link annotation
- http://sbm-nn.ru/images/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
- http://sbm-nn.ru/images/coin-master-hack-no-survey-2021_GM406889139.pdfIn PDF document text
- http://sbm-nn.ru/images/free-robux-com-roblox_GM431946152.pdfIn PDF document text
- http://sbm-nn.ru/images/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
- http://sbm-nn.ru/images/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
- http://sbm-nn.ru/images/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
- http://sbm-nn.ru/images/free-robux-discord_GM431946152.pdfIn PDF document text
- http://sbm-nn.ru/images/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
- http://sbm-nn.ru/images/coin-master-free-spins-link-2021-ios_GM406889139.pdfIn PDF document text
- http://sbm-nn.ru/images/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
- http://sbm-nn.ru/images/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
- http://sbm-nn.ru/images/coin-master-connection-lost_GM406889139.pdfIn PDF document text
- http://sbm-nn.ru/images/how-to-make-roblox-clothes-free_GM431946152.pdfIn PDF document text
- http://sbm-nn.ru/images/coin-master-tiradas-gratis-link_GM406889139.pdfIn PDF document text
- http://sbm-nn.ru/images/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
- http://sbm-nn.ru/images/free-robux-without-survey_GM431946152.pdfIn PDF document text
- http://sbm-nn.ru/images/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
- http://sbm-nn.ru/images/coin-master-fan-page-facebook_GM406889139.pdfIn PDF document text
- http://sbm-nn.ru/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
- http://sbm-nn.ru/images/hacking-roblox-items_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.

Filename	Kind	Source	Size
`stream_004_off00004fca.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4FCA	29180 bytes
SHA-256: `f0f2638ac0634bc9aee309bcd2ed842ce6fee6615ab50be43cccf4b392809a35`
`font_01_sfnt_off00009327.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9327	18676 bytes
SHA-256: `1da2170e67e37379330d7180f0e96d8209bf0facf3453c4400998fa690c966f2`

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