Malicious PDF — malware analysis report

Static analysis result for SHA-256 db5dcf0b6c9ab2e9…

MALICIOUS

PDF

46.2 KB Created: 2021-05-16 20:39:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: cbec62749e07e21591dd9f135813a01e SHA-1: c8639204224d46f34b961d2369a7c576070955d7 SHA-256: db5dcf0b6c9ab2e939df6427068d136ca90326497e9620c11b59c437afcdd511
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of free game hacks, a common social engineering tactic. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' suggests the document may also instruct users to execute commands, potentially to download and run a second-stage payload. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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
  • 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/479516143/minecraft-bedrock-edition-pc-free-game-hack In PDF document text
    • https://esl.ipb.ac.id/images/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/rare-free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/minecraft-pe-hacks-2021_GM479516143.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/minecraft-free-ios-no-verification_GM479516143.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/how-to-get-free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/hack-version-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/coin-master-free-raid-link_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/how-to-get-stuff-that-cost-coins-free-mcpe-master_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004dbf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DBF 25584 bytes
SHA-256: 23d1381c1dbf63ee250002e252e112a5bb38b16aa1fc7841bdd3d346548f69ec
font_01_sfnt_off000087a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87A6 2912 bytes
SHA-256: 02b35010e2614e3cc95ac6414c49295350c91fdfcc4b4cad27ffdbc10e80df7f
font_02_sfnt_off000091a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91A3 18424 bytes
SHA-256: b5a3fec1d7f3ae012b17f1950b72f1e02224ae7313c4d9c9d68c8b40b26cb064

Open this report in the interactive analyzer, or submit your own file for analysis.