Malicious PDF — malware analysis report

Static analysis result for SHA-256 eddc91a144e1b052…

MALICIOUS

PDF

38.4 KB Created: 2021-05-22 15:38:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 2ff5da9188e13326388ab6c97c56eb93 SHA-1: 729b0b402f475ae84590b0c5db52e105ffee82eb SHA-256: eddc91a144e1b052bf7dc5ff63884943525974b78273db03a9c183d1dc5d34fa
160 Risk Score

Malware Insights

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

The PDF contains multiple links to known malicious redirectors and lures for 'game hacks' and 'free generators', aiming to trick users into clicking. The document body explicitly mentions 'Is Minecraft Free On Ps4' and includes a 'CLICK HERE TO ACCESS MINECRAFT GENERATOR' call to action, reinforcing the lure. While no scripts were directly extracted, the PDF structure and embedded links suggest a workflow designed to lead the user to malicious infrastructure, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7268

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/479516143/is-minecraft-free-on-ps4-game-hack In PDF document text
    • http://unionmusicaldebenidorm.com/images/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/how-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://youtuIn 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_002_off000033ba.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33BA 24640 bytes
SHA-256: 7f0b6a983fae240c53d3bc648582a964c6f13de223ca56144f1bbb5b654af706
font_01_sfnt_off00006c48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C48 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00007632.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7632 17784 bytes
SHA-256: 6bdb79261e2e18097973e8a24e5f78e76fe24063bf06913bb75cbf544b02b3c5