Malicious PDF — malware analysis report

Static analysis result for SHA-256 7eef8e7ae799cfbf…

MALICIOUS

PDF

43.9 KB Created: 2021-05-10 23:43:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 5233e442a947196a4a0b5f5767f7fae1 SHA-1: 743b78da04fa0e700dd1ae0ae0a0c1d4e5ba68bf SHA-256: 7eef8e7ae799cfbf2803841638df199953fb91494f1b605adf21f9b1b03f2448
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as offers for game hacks and free currency. The document body and embedded URLs strongly suggest a phishing or scam attempt to lure users to malicious sites. No scripts were extracted, but the presence of multiple malicious links indicates a high likelihood of further malicious activity upon user interaction.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

Heuristics 4

  • 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.
  • 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/406889139/50-free-spins-coin-master-game-hack In PDF document text
    • http://aircraft.by/images/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://aircraft.by/images/minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://aircraft.by/images/free-coin-master-glitches_GM406889139.pdfIn PDF document text
    • http://aircraft.by/images/coin-master-hack-online-generator_GM406889139.pdfIn PDF document text
    • http://aircraft.by/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://aircraft.by/images/how-to-get-minecraft-bedrock-edition-on-pc-for-free_GM479516143.pdfIn PDF document text
    • http://aircraft.by/images/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://aircraft.by/images/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://aircraft.by/images/hack-version-of-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://aircraft.by/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://aircraft.by/images/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://aircraft.by/images/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://aircraft.by/images/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://aircraft.by/images/coin-master-hack-spin_GM406889139.pdfIn PDF document text
    • http://aircraft.by/images/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
    • http://aircraft.by/images/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://aircraft.by/images/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://aircraft.by/images/hack-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://aircraft.by/images/free-minecraft-gift-codes_GM479516143.pdfIn PDF document text
    • http://aircraft.by/images/wurst-112_GM479516143.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_off0000466b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x466B 25100 bytes
SHA-256: a38f598dc5ea3e6d594e4950766be8c9175355792782542c4eb863cda795e127
font_01_sfnt_off00007f02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F02 2956 bytes
SHA-256: cc6ee08a5af07cdf809d5f718a6f4b581fc47059b13d069ac995502e41039ee4
font_02_sfnt_off00008925.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8925 18192 bytes
SHA-256: a4943b7840cd3959a8ceaa1ed690fa7e50048a9b71dafef76241fe8ac415bb35

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