Malicious PDF — malware analysis report

Static analysis result for SHA-256 dde2e872b50a42b0…

MALICIOUS

PDF

36.8 KB Created: 2021-05-22 08:34:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 11713386d70c64b81824e61cf2884c67 SHA-1: ed9ae17874905cadc53c9eac23966153b4184fc5 SHA-256: dde2e872b50a42b09418023e2bbf289817eee5d77fd8818b47f043d496c78549
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'generators'. The document body and heuristics indicate a lure designed to trick users into clicking these links, which then lead to further malicious PDF files. The presence of embedded URLs and the nature of the lures suggest a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/406889139/coin-master-hack-activegamer-game-hack In PDF document text
    • https://heritagebanquethall.ca/images/free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://heritagebanquethall.ca/images/coin-master-free_GM406889139.pdfIn PDF document text
    • https://heritagebanquethall.ca/images/how-to-hack-coin-master-spin-ios_GM406889139.pdfIn PDF document text
    • https://heritagebanquethall.ca/images/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • https://heritagebanquethall.ca/images/how-to-hack-into-someones-roblox-account_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
stream_002_off000033c2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33C2 25560 bytes
SHA-256: 107373008a558598416e6412c3825bf5366756f4aba534f71d3cf138428dd56d
font_01_sfnt_off00006e38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E38 18376 bytes
SHA-256: 7942159ea88d166bbca90a684af9c7642873a6db171e4c543e33bc315b6ed94a