Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ffc59f32b32df92…

MALICIOUS

PDF

34.3 KB Created: 2021-06-19 23:19:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 8a849406330e8093b52e89b222ffa9c5 SHA-1: faf54a1aecbc952926d30916ac0a25e5aef929c8 SHA-256: 5ffc59f32b32df92acf1ede82da25523d3da33f9dd53289aeb9b6c9a9216c8e9
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple links to websites that are identified as malicious redirectors or host potentially unwanted content, specifically related to game hacks and free currency. The document body and heuristics indicate a lure to download or access these resources, likely leading to malware or phishing. The presence of a clipboard command lure suggests an attempt to trick users into executing commands, further supporting a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • 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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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 http://netcdn.co/app/431946152/how-to-get-free-robux-on-hp-laptop-game-hack In PDF document text
    • http://103.40.122.33/akasia/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfPDF link annotation
    • http://103.40.122.33/akasia/repository/easy-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-roblox-account-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-generator-no-download-no-surveys-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/minecraft-com-free_GM479516143.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/hack-pour-roblox-apocalipse-rising_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-robux-on-ipad-mini-2_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-get-any-item-off-the-catalogue-for-free-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/cheat-pekalongan-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-grab-the-child-hacks_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.

FilenameKindSourceSize
font_00_sfnt_off000030e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E6 21792 bytes
SHA-256: 7c20a7d5427da7f7a0eb2a302dba5600bd767ecb955a48ac0344bd2e5158b5ee
font_01_sfnt_off0000609f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x609F 19160 bytes
SHA-256: 8b775e79ba4aa173b4c99911e24f2632f31268e37daaa12dcc1b10de35789abc

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