Malicious PDF — malware analysis report

Static analysis result for SHA-256 dba016ccc4850e36…

MALICIOUS

PDF

34.6 KB Created: 2021-06-20 10:35:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 2ebb34697f0e1f0eadaee828ddb6f5b7 SHA-1: 190110c9057c72633bb5fcc2e97ffccf674ded54 SHA-256: dba016ccc4850e3637d30e230a3c77950063231b3ff7f3d0d9c7f92be3a1a7f9
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure of game hacks and generators to trick users into clicking malicious links. It contains multiple links pointing to a redirector and directly to IP addresses hosting further PDF files, suggesting a chain of malicious downloads. The ML classifier strongly indicates malicious intent, and the presence of embedded URLs and a download button lure reinforces this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • 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/prisonj-life-hacks-roblox-game-hack In PDF document text
    • http://103.40.122.33/akasia/repository/roblox-fashion-frenzy-game-free-online_GM431946152.pdfPDF link annotation
    • http://103.40.122.33/akasia/repository/hack-roblox-account-to-get-password_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/getgaming-resources-roblox-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/hacking-john-doe-in-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-roblox-boombox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/money-cheats-for-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/mcpe-116_GM479516143.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-tiktok-coins_GM835599320.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/tiktok-free-view-59_GM835599320.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/freer-pro-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/easy-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-hack-roblox-with-lucky-patcher-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-hack-pretty-face-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-hack-robux-2021-on-ipad_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-roblox-codes_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-halo-for-free-roblox_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_off00002e1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E1F 23044 bytes
SHA-256: 69c43c95064489939771461c69ecc38ef51ab1f5f234e1089588c9b39e72fd8f
font_01_sfnt_off00006203.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6203 19116 bytes
SHA-256: 4e0855615ccf2f80fb579d6ea3863b978b5a01afe66d6319094cbdcf9c9d8f5e

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