Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd3511dc93d31eed…

MALICIOUS

PDF

43.5 KB Created: 2021-05-19 18:22:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 52a209699320ea018e699e7a51c9d5ed SHA-1: 6c431ecc9c98079ce9b2a4488eec8d5f0a61e5dd SHA-256: dd3511dc93d31eed581531a78d140b80a2241bd65687ae94f8051fb3d0d056db
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that are flagged as malicious redirectors, specifically promoting game hacks and generators. The presence of these links, combined with the ML classifier's high confidence score, indicates a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the document structure and embedded URLs strongly suggest a phishing or social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/roblox-source-game-hack In PDF document text
    • https://www.nordicstar.co.uk/uploads/files/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://www.nordicstar.co.uk/uploads/files/files/coin-master-golden-cards-hack_GM406889139.pdfIn PDF document text
    • https://www.nordicstar.co.uk/uploads/files/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.nordicstar.co.uk/uploads/files/files/free-promo-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.nordicstar.co.uk/uploads/files/files/roblox-robux-generator-tool_GM431946152.pdfIn PDF document text
    • https://www.nordicstar.co.uk/uploads/files/files/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • https://www.nordicstar.co.uk/uploads/files/files/coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.nordicstar.co.uk/uploads/files/files/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • https://www.nordicstar.co.uk/uploads/files/files/coin-master-daily-free-spins-25_GM406889139.pdfIn PDF document text
    • https://www.nordicstar.co.uk/uploads/files/files/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.nordicstar.co.uk/uploads/files/files/coin-master-free-spin-daily-bonus_GM406889139.pdfIn PDF document text
    • https://www.nordicstar.co.uk/uploads/files/files/free-roblox-card_GM431946152.pdfIn PDF document text
    • https://www.nordicstar.co.uk/uploads/files/files/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.nordicstar.co.uk/uploads/files/files/how-to-hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • https://www.nordicstar.co.uk/uploads/files/files/how-to-get-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.nordicstar.co.uk/uploads/files/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://www.nordicstar.co.uk/uploads/files/files/sb-game-hacker-coin-master_GM406889139.pdfIn PDF document text
    • https://www.nordicstar.co.uk/uploads/files/files/coin-master-link-app_GM406889139.pdfIn PDF document text
    • https://www.nordicstar.co.uk/uploads/files/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • https://www.nordicstar.co.uk/uploads/files/files/hack-coin-master-net_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b42.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B42 26504 bytes
SHA-256: d1529465f074477959364ddd843bd6c0d0055b5315f989e5824e58d972802f39
font_01_sfnt_off000088d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88D7 17924 bytes
SHA-256: de701b1390df5ea6859c32be6292d3183886ea3a2a613b5f80b12093d50b4b47

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