Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dcddab2eb52c205…

MALICIOUS

PDF

36.0 KB Created: 2021-05-21 19:13:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 09bb815aa2568cf9f4c00c951a6c35c7 SHA-1: c4c28758a039d7def79e3a59db7fda064dd7a034 SHA-256: 0dcddab2eb52c2052d1cd9d54a535922b2a2d597a10e0ee7b3572d4bc545b580
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure and known malicious domains, disguised as lures for game hacks and virtual currency. The document body and embedded artifacts suggest a workflow designed to entice users to click these links, likely leading to further malicious content or downloads. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/best-free-minecraft-server-hosting-reddit-game-hack In PDF document text
    • http://ghhs.com.my/images/free-roblox-intros_GM431946152.pdfIn PDF document text
    • http://ghhs.com.my/images/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://ghhs.com.my/images/free-robux-master_GM431946152.pdfIn PDF document text
    • http://ghhs.com.my/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://ghhs.com.my/images/free-robux-2021-no-verification_GM431946152.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_002_off000031ce.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31CE 25232 bytes
SHA-256: 28678f6fe56197c5fc44b56be87507fcdaa438e7cc8e03c1ec83ef2dfd72b2a0
font_01_sfnt_off00006ace.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ACE 18504 bytes
SHA-256: d871dcb748a79589dfb9206c8c26b1b31a59c6b5fd6e64801d8efc9cfdffb698

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