Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e0e6ff6205b3bc…

MALICIOUS

PDF

48.9 KB Created: 2021-06-07 15:38:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 538b7e34de6ca46a58eec1c630a02b72 SHA-1: fd9f18c21d8130263f4fb056e50152ef2cf1c888 SHA-256: d3e0e6ff6205b3bc01e4824df3a93ba0689cac344efc58c0e13959a248a18266
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to lure users into clicking on what appear to be game hacks or free spin generators. These links redirect to malicious infrastructure, indicating a phishing or scamming attempt. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.tw/app/431946152/roblox-mad-paintball-2-speed-hack-game-hack In PDF document text
    • https://www.manmed.info:443/images/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-spins-coin-master-ios-links_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-free-spins-link-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/roblox-login-hack_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-can-get-a-roblox-hack-gui-to-work_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/easy-robux-today_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/roblox-jailbreak-money-hack-no-survey_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/roblox-exploit-download_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/minecraft-free-unblocked_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_004_off00005056.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5056 25340 bytes
SHA-256: c0898b22558f0087d9423a8450436cda6413d9337f3fec3956a1720039b7add5
font_01_sfnt_off00008b08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B08 6100 bytes
SHA-256: f866077ce59d6ea276f75e4af76daa2aab5f3a1a679df144776123d85664d65c
font_02_sfnt_off00009993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9993 19228 bytes
SHA-256: b6b372faa12b9e471ae02701aba0235dd2f8f422f7b7c31242474362b17628e2

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