Malicious PDF — malware analysis report

Static analysis result for SHA-256 a692f1a34fe031ab…

MALICIOUS

PDF

38.9 KB Created: 2021-05-23 13:35:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 4d529ca88843c9a35c8b5e2402f53ec5 SHA-1: 0cdfd7f09e7e18b7bd3b16894ff6b2ae2eb31390 SHA-256: a692f1a34fe031ab23e711d4148be3c9a0858878dbfe6ffcb8299caa455083a1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to potentially malicious infrastructure, masquerading as game hacks or generators. The document body and embedded links suggest a lure to download a payload, likely exploiting the user's interest in free in-game items. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a phishing attempt to trick users into downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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/free-texture-packs-for-minecraft-pe-game-hack In PDF document text
    • https://mme.itk.ac.id/asset/backend/upload/ckeditor/files/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • https://mme.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • https://mme.itk.ac.id/asset/backend/upload/ckeditor/files/free-robux-place_GM431946152.pdfIn PDF document text
    • https://mme.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://mme.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-get-minecraft-dungeons-for-free_GM479516143.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003357.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3357 26252 bytes
SHA-256: f6254ef7f9fd28cffc8ec8bd7602ce308f6a2649e6f43518c2bcc99cdb42e44a
font_01_sfnt_off00006c89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C89 2856 bytes
SHA-256: 8c5d9bcb386d88c7f99323d8d482e46ea21dea038a5b842744dd5d39b26b2c44
font_02_sfnt_off00007660.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7660 18384 bytes
SHA-256: 4bd922cb808520f712e6f68915d55ea385c9bd17e049420b207e71ca6d562f93

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