Malicious PDF — malware analysis report

Static analysis result for SHA-256 7022e6f40d7f13a4…

MALICIOUS

PDF

44.9 KB Created: 2021-06-03 08:47:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 6e9580cd1887e38dfcc7fe97088293c8 SHA-1: 9ec261134660e76b682c8b7e432f6cefa3aea4a0 SHA-256: 7022e6f40d7f13a44c4e8c0a73b56dc20d209d8517897d3b5f0a42d11582d724
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple embedded links that redirect to malicious infrastructure, masquerading as free game packs or robux generators. The primary link, https://netcdn.online/app/406889139/free-game-packs-for-coin-master-game-hack, is identified as a malicious redirector. The document body and heuristics indicate a lure for potentially unwanted or malicious content, likely leading to further malware download or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/free-game-packs-for-coin-master-game-hack In PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/pokemon-go-free-legendary-pokemon_GM1094591345.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/100-robux_GM431946152.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/minecraft-java-free-account_GM479516143.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/free-game-packs-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/grabpoints-robux_GM431946152.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/how-to-get-free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/100-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn 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_004_off00005539.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5539 25044 bytes
SHA-256: 8cc0c679848105bead848e8f124781758aef71e494c76dc10166b5bf117c822a
font_01_sfnt_off00008d47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D47 18292 bytes
SHA-256: 588be6712b52f4dc3b6c5b8e7dc29f20d8b81f22195d0114e9c785dd726d1321

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