Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0347f74c6491578…

MALICIOUS

PDF

37.7 KB Created: 2021-06-28 01:02:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 780231c86bb3f044be4cc7690de47571 SHA-1: 78b51f0acd62d71cd1200702abcfaa5bdcc16e84 SHA-256: b0347f74c6491578eaec8a054034679e4ca55405b9ba6ae78536e008d877204b
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links disguised as offers for free in-game currency and cheats, a common lure for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the PDF structure suggests a link farm designed to drive traffic to potentially harmful sites. Although no scripts were explicitly extracted, the embedded URLs and the nature of the lures point towards a malicious intent to trick users into downloading further payloads or visiting malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/earn-free-robux-by-completing-offers-and-surveys-game-hack PDF link annotation
    • https://library.itn.ac.id/perpusitn/repository/cheat-engine-keeps-getting-me-kicked-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/rbxcity-free-robux-instant-payout_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-free-robux-scam-uncopylocked_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-grand-blox-auto-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-admin-on-roblox-ios_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/no-clip-hacks-roblox-wall-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/comment-hacker-et-avoir-des-robux-gratuitement_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-math-games-online-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spin-and-coins-fbid-links_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-builders-club-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-spin-link-in-coin-master-game_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/chisel-and-bits-mod-pe_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-latest-version-hack_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-generator-no-download-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/my/tasksIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000374c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x374C 23368 bytes
SHA-256: 9614cecf0a6327a964543e5250b60c490b2faf7f9650825a3aa3c2deaa922caf
font_01_sfnt_off00006c2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2A 19920 bytes
SHA-256: 696e2f96526ace2050a963ba59f7f3bb0f9de088710226baac9096322556c88a

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